ISC Fixed Cheek Micropulley The ISC Fixed Cheek Micropulley is a compact, high-strength aluminum micropulley purpose-built for use with rope wrench systems. Its fixed side plates are specifically designed to work seamlessly with the stiff tether on the rope wrench, keeping the pulley stable and correctly oriented during climbing — a small detail that makes a big difference when you're moving through the canopy. Lightweight and low-profile, this micropulley adds mechanical advantage to your climbing system without adding bulk. ISC's precision engineering ensures smooth rope travel and reliable performance session after session. Specifications MBS: 24 kN (5,395 lbs) Compatible rope diameter: Up to 1/2" (13 mm) Weight: 0.2 lbs Side plates: Fixed (non-opening) Material: Aluminum Manufacturer: ISC (Wales, UK) Key Features Fixed side plates designed for use with rope wrench stiff tether Compact, low-profile micropulley for climbing systems High-strength aluminum construction Smooth-running sheave for efficient rope travel Rated to 24 kN MBS for professional use Frequently Asked Questions What is the difference between fixed and swing cheek pulleys? Fixed cheek pulleys have solid, non-opening side plates — the rope must be threaded through during setup. Swing cheek pulleys have a hinged side plate that opens for mid-line attachment. The fixed cheek design is preferred for rope wrench applications where stability is critical. Looking for a swing cheek version? See the ISC Swing Cheek Pulley for a mid-line attachable option.
