Petzl Unisex's Grigri Accessory For Climbing, Grey, UNI

A belay device with cam-assisted blocking, designed to make belaying easier in the gym and at the crag. Compatible with 8.5 to 11 mm dynamic single ropes and optimized for those 8.9 to 10.5 mm. Cam-assisted blocking for a more comfortable belay: when the climber falls or weights the rope, it tightens, making the cam pivot to pinch and block the rope. Progressive control of rope feed provides a smooth and comfortable descent. The handle offers a comfortable grip, making it easy to unblock the rope. Designed for all users, for top rope or lead belaying. Makes it easy to jump on your project!