Petzl Grigri belay device and rope brake Slackhouse Shop $23 mo Finance Petzl GRIGRI + Belay Device with Cam Assisted Blocking PETZL GRIGRI 2 BELAY DEVICE WITH ASSISTED BRAKING Petzl GRIGRI + Rescue Belay Device. The Petzl GRIGRI + is a premium assisted braking belay device designed for single ropes (8. 511 mm). Ideal for both indoor and outdoor climbing, it features an anti panic handle for added safety during descent and two usage modes (Top rope and Lead) for optimal control. Its robust aluminum and stainless steel construction ensures long lasting performance. Perfect for beginners and experienced climbers alike.