For people who climb for a living. 09 274 8090

CMC Clutch 11mm

CMC Clutch 11mm

CMC Clutch 11mm



The 11mm CMC™ CLUTCH™ by Harken Industrial™ redefines versatility in rope management with its multifunctional design. It is a wearable tool for hauling, controlled lowering, smooth personal descent, easy ascending, and reliable progress capture. Engineered to replace traditional hardware in rescue operations and personal descenders, the CLUTCH delivers up to 38% higher efficiency in hauling and ascending than cam-style devices, minimizing changeovers and reducing equipment training and cost. The CLUTCH ensures operational safety and overload protection with features like an anti-panic brake, force-limiting capabilities, and a stainless steel ratcheting sheave for auto-locking progress capture. Its machined aluminium chassis with stainless steel wear guards ensures durability, while the integrated becket directly connects mechanical advantage components. Compatible with a range of rope sizes and certified to NFPA, ANSI, and EN standards, the CLUTCH is a patented, USA-made innovation streamlining rope operations with unmatched efficiency and reliability.

Minimum Qty

1 Items

Order Ships in

1 Bus Days


In Stock

Product Code: 117-10002001

All prices include GST
  • Single wearable tool for efficient hauling, controlled lowering, smooth personal descent, easy ascending, belaying, and Twin Tension Rope Systems
  • Delivers up to 38% higher efficiency in hauling and ascending than a cam-style device: reducing changeovers
  • Allows main and belay lines to be twin-tensioned in mirrored or nested configurations (Double CLUTCH Technique)
  • Stainless steel ratcheting and rotating sheave provides efficient and audible auto-locking progress capture
  • Control handle has large sweet spot for smooth, progressive lowering and descent control
  • Anti-Panic brake and force limiting features ensure operational safety and overload protection
  • Patented. Made in the USA

PLEASE NOTE: Adequate training and judgment are needed to reduce the risks inherent in using this equipment. The purchaser's responsibility is to ensure they are competent in using this product. Treetools strongly advise that you do not use any height safety equipment without first undertaking appropriate training.

Weight 836 g
Rope Min Ø 10.5 mm
Rope Max Ø 11 mm
3 Sigma 40 kN
Max Load 272 kg
Efficiency 95%
Certified EN 12841/C
EN 341/2A
EN 15151
ANSI Z359.4-2013
NFPA 1983

Under $250  
Auckland $6.90
North Island $9.90
South Island $12.90
Orders Over $250 FREE*

Orders with Rural Delivery addresses may take longer than stated to arrive.


Due to factors out of our control, Treetools is experiencing random shipping delays and supply issues that may result in some gear not being available either in-store and/or online. We apologise for any inconvenience this may cause.

*Free Shipping excludes ladders and overweight product.

NO INTERNATIONAL SHIPPING Treetools is a 'kiwi only' affair.
Find out more about Treetools Shipping and Return Policy here.
All parcels require a signature on delivery unless requested otherwise.

Accurately tracking the life of a product is paramount for your safety

At Treetools, we prioritize your safety above all else, so we cannot accept returns on safety equipment. This policy ensures that your gear is always brand new, safe, and traceable to our trusted manufacturers and suppliers. We understand the critical role this equipment plays in your safety, potentially even preserving your life during climbs or work aloft. Therefore, we urge you to choose carefully before making your purchase. Additionally, please note that suitably trained and qualified individuals should use the climbing and rigging equipment listed on our website. Thank you for your understanding and commitment to safety.

What counts as work at height safety equipment?
  • Ascenders
  • Carabiners
  • Climbing Kits
  • Climbing Lines
  • Climbing spurs
  • Connectors
  • Descenders
  • Friction Cords
  • Friction Savers
  • Harnesses
  • Helmets
  • Lanyards
  • Pulleys
  • Rope Tools
  • Slings
  • Swivels

It is crucial that you select compatible gear for your specific configuration to ensure maximum safety. Failure to do so may result in severe consequences. We highly recommend that you choose the correct diameter rope that matches the hardware you are using. Please note that safety products cannot be returned due to configuration incompatibility. Therefore, we strongly advise you to conduct thorough research or ask us for clarification before making a purchase. Your safety is our top priority.

You may also like

Copyright © Treetools New Zealand 2024. All rights reserved.