Versatile, lightweight belay/rappel device, for use with one or two rope strands and ability to belay a follower from the anchor. Compatible with most dynamic rope diameters (single 8.5 to 10.5 mm, half 7.1 to 9.2 mm, and twin 6.9 to 9.2 mm). Feeding slack and catching falls are accomplished using standard belay techniques, always keeping a hand on the brake side of the rope. V-shaped friction grooves enable controlled braking. Versatile, it can be used for single pitch, multi-pitch, and mountaineering: allows you to belay a climber and rappel on one or two strands. Reverso mode, for belaying one or two followers.