ASSISTED BRAKING FOR MORE COMFORT - THE PETZL GRIGRI BELAY DEVICE. This belay device will make your belaying easier and more comfortable. The Petzl GriGri Belay Device features assisted breaking which activates when a climber falls. You can lower a climber with smooth control thanks to the ergonomic handle and progressive cam action. FEATURESDesigned for experienced belayers, the assisted braking function activates when a climber falls; the device pivots, the rope tightens and the cam pinches to block the ropeAlways catch falls and feed slack using standard belay techniques, keeping a hand on the brake side of the rope to help engage the camBalanced design is optimized for 8.9-10.5 mm rope diameters and is simple to use for belaying both lead or top-rope climbersRope installation diagram is engraved on both the interior and exterior of the deviceCamming mechanism enables exceptional descent control when loweringErgonomic handle and progressive cam action allow you to easily lower a climber with smooth descent controlDurably constructed with aluminum side plates, stainless-steel cam and friction plate and a reinforced nylon handleCertified to CE EN 15151-1 and UIAA standardsTECH SPECSWeight: 175 gramsFits Rope Sizes 8.5-11mm, single