Hook onto OS-Rack Loops or OS-32 Soft Pannier (both sold separately) for attaching roll-top bags, tents, etc. The "hook-back" feature also allows you to mount one end around a bike frame or grab rail. Two (2x) 1.3 meter (50") long, high-quality 25 mm webbing. Molded Acetal buckle. Ultra-aggressive spikes on cam grip even when wet. Aircraft-grade alloy hooks. Weight: 100 grams / 3.5 ounces.