Used on rock for 2-3 years. I'm selling it because I switched to a NEOX. The "Grigri+" is a belay device for all climbers, including beginners. * Can be used with single ropes of 8.5mm or greater, and is optimally used with ropes of 8.9 - 10.5 mm diameter. * Properly controls rope flow with the handle. * Handle with anti-panic function. * Equipped with a mode ideal for top-rope belaying. \#Petzl \#Climbing \#grigri