Twin-arm heavy-duty choke tether rated to 20kg for pry bars, crowbars, sledgehammers, slogging wrenches, and other straight-shafted tools used at height.
- 20kg max load, dynamically tested at 2:1 safety factor
- Certified to ANSI/ISEA 121-2023 and NS 9611:2022+AC
- CE and UKCA marked
- Two securing arms prevent both rotation and longitudinal slip on straight-shafted and cylindrical-handled tools
- Pairs with NLG Tether Tape as part of the NLG Instant Tether System, one Tether Tape length per arm (Tether Tape positions only, not load bearing)
- Contrast wear indicators give early warning of structural damage before failure
- Designed for the most difficult to tether tools on site
- NLG ID orange scannable tag for certificates, inspection records, and installation videos
NLG Tether Choke Twin Arm - 20kg Heavy-Duty Tool Tethering
Twin-arm heavy-duty choke tether rated to 20kg for pry bars, crowbars, sledgehammers, slogging wrenches, and other straight-shafted tools used at height.
- 20kg max load, dynamically tested at 2:1 safety factor
- Certified to ANSI/ISEA 121-2023 and NS 9611:2022+AC
- CE and UKCA marked
- Two securing arms prevent both rotation and longitudinal slip on straight-shafted and cylindrical-handled tools
- Pairs with NLG Tether Tape as part of the NLG Instant Tether System, one Tether Tape length per arm (Tether Tape positions only, not load bearing)
- Contrast wear indicators give early warning of structural damage before failure
- Designed for the most difficult to tether tools on site
- NLG ID orange scannable tag for certificates, inspection records, and installation videos
- Buy 10 for £21.86 £18.22 each and save 6%
- Buy 20 for £20.28 £16.90 each and save 12%
| BULK DISCOUNT | 10 | 20 |
|---|---|---|
| Price | £18.22 £21.86 | £16.90 £20.28 |
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Log in to access trade discountsNLG Tether Choke Twin Arm
Twin-arm heavy-duty choke tether rated to 20kg for pry bars, crowbars, sledgehammers, slogging wrenches, and other straight-shafted or cylindrical-handled tools that cannot be reliably secured with a single-arm or plain cinch attachment. Two securing arms, locked in position with NLG Tether Tape, prevent both rotation and longitudinal slip along the tool shaft simultaneously. The same extra high-strength webbing, contrast wear indicators, and optimised V Ring as the rest of the Tether Choke range.
How Two Arms Solve the Straight-Shaft Problem
A plain cinch or single-arm choke on a straight-shafted tool like a pry bar has no handle geometry to anchor against. The choke can rotate around the shaft and migrate along it during use. A single arm stops rotation at one point but cannot prevent the choke from working up or down the shaft over time. Two arms locked at separate positions along the tool body address both failure modes simultaneously: one arm prevents rotation and the other prevents longitudinal migration, keeping the cinch seated at the correct position for the entire working period.
Key Features
Twin securing arms: Two separate arms, each locked with a length of Tether Tape, provide two contact points along the tool shaft. Together they prevent both rotation and longitudinal slip, the combination that straight-shafted tools require.
Built for the hardest tools to tether: Pry bars, crowbars, sledgehammers, and slogging wrenches have no captive holes, no distinct handles, and no geometry that a standard attachment can grip. The Twin Arm with Tether Tape creates a secure, certified tether point on all of them.
NLG Instant Tether System compatible: Two lengths of Tether Tape are required, one per arm. Each is wrapped around its arm and the tool body at least five times and stretched firmly to activate the self-fusing technology. Tether Tape is for positioning only and carries no load.
20kg max load, dynamically tested: Third-party tested to 40kg against the 20kg rating. Certified to ANSI/ISEA 121-2023 and NS 9611:2022+AC, CE and UKCA marked.
Contrast wear indicators: Built into the webbing. When the contrasting colour beneath the outer layer becomes visible, retire the attachment before structural integrity is affected.
NLG ID serialised technology: Unique serial number per unit. Scan the orange NLG ID tag to access certificates, Declarations of Conformity, and installation videos.
Who Is This For
Trades and roles:
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Groundworkers and demolition operatives using pry bars and crowbars at height
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Steel fixers and structural engineers with slogging wrenches and striking spanners
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Construction operatives carrying sledgehammers to elevated working platforms
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Scaffolders handling heavy straight-shafted tools on scaffold platforms
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Rope access technicians working with heavy-shafted tools above ground
Industries:
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Construction and civil engineering
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Demolition
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Structural steelwork
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Utilities and infrastructure
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Rail and transport
Specifications
| Specification | Detail |
| Product Name | NLG Tether Choke Twin Arm - 20kg Heavy-Duty Tool Tethering |
| SKU | NLG101369 |
| Product Type | Twin-Arm Heavy-Duty Webbing Choke Tether |
| Max Load | 20 KG / 44 LBS |
| Load Testing | Dynamic, 2:1 Safety Factor, Third-Party Certified |
| Safety Standards | ANSI/ISEA 121-2023, NS 9611:2022+AC |
| Compliance Markings | CE, UKCA |
| Securing Arms | 2 securing arms — prevents rotation and longitudinal slip on straight-shafted and cylindrical-handled tools |
| Primary Application | Straight-shafted and cylindrical-handled tools: pry bars, crowbars, sledgehammers, slogging wrenches |
| Tether Tape Pairing | Pairs with NLG Tether Tape as part of NLG Instant Tether System. One Tether Tape length per arm (two lengths total). Tether Tape is for positioning only and is not load bearing. |
| Webbing | Extra high-strength heavy-duty webbing |
| Connection Point | Optimised V Ring for choke cinch method at high loads |
| Inspection Feature | Heavy-duty contrast stitching for faster visual inspection |
| Wear Indicators | Contrast wear indicators — early warning of structural damage before failure |
| NLG ID Technology | Scannable orange tag — access certificates, inspection records, and installation videos via phone |
| Serialisation | Unique serial number per unit |
| Dimensions | 340mm (L) x 25mm (W) |
| Max Lanyard Length | 200 CM / 78 IN |
| Unit Weight | 55g |
Compatibility
| Application or Tool Type | Status |
|---|---|
| Pry bars, crowbars, and straight-shafted levers with no distinct handle geometry | ✓ Compatible — primary application for Twin Arm |
| Sledgehammers, slogging wrenches, and heavy straight-handled tools up to 20kg | ✓ Compatible |
| Long cylindrical-handled tools where a single arm cannot prevent longitudinal slip | ✓ Compatible |
| Tools with captive handles where two points of positional stability are required | ✓ Compatible |
| Paired with NLG Tether Tape (two lengths, one per arm) for NLG Instant Tether System | ✓ Compatible — Tether Tape for positioning only, not load bearing |
| Tools weighing over 20kg | ✗ Not Suitable |
| Personal fall arrest — tool attachment only, not a fall protection component | ✗ Not Suitable |
| Lanyard connection to webbing loop, securing arms, or Tether Tape — always to V Ring | ✗ Not Suitable |
Who Is This For
The Twin Arm Tether Choke is for workers who carry the most difficult tools to tether at height: straight-shafted tools such as pry bars and crowbars with no captive hole or handle, sledgehammers with long cylindrical handles, and slogging wrenches where no standard attachment can maintain its position during use. It is the correct choice where a Single Arm Tether Choke has been tried and found insufficient for positional stability, or where the tool type is known to require two contact points to stay in position throughout the working shift. For power tools with triggers, the Single Arm is the more appropriate choice.
Typical Applications
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Tethering pry bars and crowbars at height on demolition, structural, and groundwork sites where the straight shaft offers no natural attachment geometry.
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Securing sledgehammers on elevated platforms and scaffold boards where the tool is needed for driving pins, breaking concrete, or striking fixings.
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Creating a certified tether point on slogging wrenches and striking spanners used by steel fixers and structural steelworkers at height.
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Providing a stable tether attachment on long cylindrical-handled tools where a plain cinch or single-arm attachment migrates along the shaft during use.
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Meeting the employer's duty under the Work at Height Regulations 2005 to prevent objects falling from height, for the site tools that have historically been the hardest to protect.
How to Use
Step 1: Pass the loop end of the webbing around the handle or shaft of the tool. Pass the V Ring through the loop end to create a choke cinch around the tool body.
Step 2: Pull the V Ring end firmly until the webbing seats tightly. Both securing arms should sit against the tool body, positioned at separate points along the shaft.
Step 3: Cut two separate lengths of NLG Tether Tape, one for each arm, each long enough to wrap around the tool at least five times. Remove the plastic backing strip from each length.
Step 4: Wrap the first Tether Tape length around the first securing arm and the tool body, leaving the webbing catch exposed. Stretch the tape firmly during wrapping to activate its self-fusing technology.
Step 5: Repeat with the second Tether Tape length on the second securing arm. Both arms must be independently secured.
Step 6: Test the tether point firmly before putting the tool into use at height.
Step 7: Connect an approved NLG tool lanyard rated to at least 20kg to the V Ring only. Never connect the lanyard to the webbing loop, either securing arm, or the Tether Tape.
Step 8: After any drop event, quarantine all components and inspect against the NLG Inspection Checklist before returning to service.
Common Mistakes
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Applying only one length of Tether Tape for both arms. Each arm requires its own separate Tether Tape length. A single length shared across both arms does not provide the independent positional lock that each arm requires.
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Not stretching the Tether Tape firmly during application. The self-fusing technology activates under tension. Loosely applied tape will not hold the arm in position during use.
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Connecting the lanyard to either securing arm or to the Tether Tape. The lanyard must always connect to the V Ring only. Neither the securing arms nor the Tether Tape carry load.
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Ignoring the wear indicators. If the contrasting colour beneath the outer webbing layer becomes visible on any part of the strap, retire the attachment immediately.
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Using on tools over 20kg without seeking specialist advice.
Safety
The Twin Arm Tether Choke is rated to 20kg maximum load. The securing arms and Tether Tape are for positioning only and carry no load. All load runs through the webbing cinch and V Ring. The lanyard must connect to the V Ring only. This product must not be used as a personal fall protection component. The anchor point used must be rated to at least the weight of the tool. After any drop event, quarantine all components and inspect against the NLG Inspection Checklist before returning to service. Employers have a duty under the Work at Height Regulations 2005 to take suitable steps to prevent objects falling from height.
Maintenance
Inspect the full webbing length for cuts, abrasion, fraying, burns, and soiling before each use. Check the contrast wear indicators on both sides of the webbing: if contrasting colour beneath the outer layer is visible at any point, retire the attachment. Inspect both securing arms for damage or deformation. Inspect the V Ring for distortion, cracks, sharp edges, and corrosion. Clean with a water-dampened cloth and mild soap solution; air dry away from direct heat and sunlight. Store in a clean, dry environment away from chemicals and solvents. Record formal inspections by serial number using the NLG Inspection Checklist.
Frequently Asked Questions
Q: What tools is the Twin Arm Tether Choke specifically designed for?
A: It is designed for straight-shafted and cylindrical-handled tools where no standard attachment can maintain its position during use. Pry bars, crowbars, sledgehammers, slogging wrenches, and similar tools with no captive hole, no distinct handle separation, and no geometry that a single-arm attachment can anchor against are all primary applications. For tools with a trigger such as power drills and angle grinders, the Single Arm Tether Choke is the more appropriate choice.
Q: Why does a straight-shafted tool need two arms when a single arm works on other tools?
A: A single arm prevents a choke from rotating around the tool shaft. On a tool with a distinct handle or trigger housing, the handle geometry itself also helps keep the choke in position longitudinally. On a straight-shafted tool like a pry bar or sledgehammer, there is no handle geometry to assist, so the choke can migrate along the shaft. The second arm provides an independent contact point at a separate position along the shaft, preventing the choke from sliding during use. Both failure modes are closed simultaneously.
Q: How many lengths of Tether Tape do I need for the Twin Arm?
A: Two separate lengths are required, one for each arm. Each length must be long enough to wrap around the tool body at least five times. The lengths are cut separately and applied independently to each arm. Tether Tape is for positioning only and carries no load in this setup.
Q: What do the safety standards mean for UK site compliance?
A: The Twin Arm Tether Choke is certified to ANSI/ISEA 121-2023, the current international standard for dropped object prevention equipment, and NS 9611:2022+AC, the standard for personal tool attachment systems at height. Dynamic testing at 2:1 safety factor means the product is tested at 40kg against its 20kg rating. CE and UKCA marking confirms compliance with UK and European safety requirements. Independent load test certificates and Declarations of Conformity are available from NLG on request.
Q: What is this product NOT suitable for?
A: It is not suitable for tools weighing more than 20kg. The lanyard must always connect to the V Ring, not the webbing loop, securing arms, or Tether Tape. This product must not be used as a personal fall protection component. The anchor point used alongside it must be rated to at least the weight of the tool.
Q: What is the difference between the Twin Arm and the Single Arm Tether Choke?
A: The Single Arm has one securing strap and is designed primarily for power tools with triggers, where the single arm keeps the choke positioned away from the trigger. The Twin Arm has two securing straps and is designed for straight-shafted tools where two contact points are needed to prevent both rotation and longitudinal slip. Single Arm requires one Tether Tape length. Twin Arm requires two. Both carry the same 20kg rating and share the same webbing construction, V Ring, and wear indicators.
Q: Is the Tether Tape the same as the tool lanyard?
A: No. Tether Tape and the tool lanyard are entirely different components with different functions. Tether Tape is a self-fusing silicone tape used to lock the securing arms against the tool body. It is for positioning only and carries no load. The tool lanyard is the rated, load-bearing connection between the tether attachment and the anchor point. Always connect the lanyard to the V Ring, not to the Tether Tape.
Q: When should the Twin Arm Tether Choke be retired from service?
A: Retire immediately if the contrast wear indicators show contrasting colour beneath the outer webbing layer; if the webbing shows cuts, fraying, or significant abrasion; if either securing arm is deformed or damaged; or if the V Ring shows distortion, cracks, sharp edges, or corrosion. Any unit involved in a drop event must be quarantined and formally inspected against the NLG Inspection Checklist before it is returned to service.
Q: Can I order these in bulk for a site where multiple operatives use pry bars or sledgehammers?
A: Yes. CMT Group's EDGE procurement portal supports volume ordering with agreed contract pricing, multi-site delivery management, and full order tracking from dispatch to delivery. For sites deploying the NLG Instant Tether System across multiple operatives, EDGE simplifies procurement and maintains a complete auditable record. Order by 7pm for next-day delivery on stocked lines across the UK mainland.
Q: How do I know CMT Group is a reliable source for this type of specialist tethering equipment?
A: CMT Group is a BSIF Registered Safety Supplier, ISO 9001:2015 accredited, and CHAS Elite certified. These accreditations require independent audit and demonstrate commitment to stocking only genuine, compliant safety products. NLG Tether Choke products carry independent third-party load test certificates and Declarations of Conformity. CMT Group has supplied UK construction and industrial sites since 2010 and is rated Excellent on Trustpilot.
