The Petzl GRIGRI Assisted-braking Dvice is a belay device with assisted braking designed for belaying both in the gym and at the crag. Belay device with assisted braking, for a broad range of single rope diameters (8.5 to 11 mm), designed for the experienced belayer. Designed for the experienced belayer, Compact and lightweight, it can be used with single ropes from 8.5 to 11 mm. The assisted braking function improves comfort while belaying, holding a climber or catching a fall. The design of the handled camming mechanism enables exceptional descent control.