The versatile CMC™ CLUTCH™ by Harken Industrial™ is a single wearable tool suited for efficient hauling, controlled lowering, smooth personal descent, easy ascending, and reliable progress capture. Not only does it replace the hardware used in a traditional raise/lower system for rescue operations, it also serves as a personal descender with the most efficient ascending capability of any product in its class.

The CLUTCH enables more rope operations with one tool than anything we’ve ever evaluated.

The CLUTCH is the result of the design and product engineering collaboration by two experts with a collective 90 year history in rope management under heavy loads; CMC, a company with roots in rescue and rope access, and Harken Industrial, a manufacturing company with roots in high-performance sailing.


The CMC CLUTCH by Harken Industrial is certified under EN 12841:2006/C, EN 341:2001/2A, EN 15151-1: 2012/8, ANSI/ASSE Z359.4-2013 and NFPA 1983 (2017 ED).


Minimum line Ø (mm) 10.5 mm
Minimum line Ø (in) 13/32 in
Maximum line Ø (mm) 11 mm
Maximum line Ø (in) 7/16 in
Width (mm) 112 mm
Width (in) 4 13/32 in
Height (mm) 204 mm
Height (in) 8 1/32 in
Weight (kg) 0.84 kg
Weight (lb) 1.85 lb
Maximum rated load 2-person Refer to manual for specific load rating per standard
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