Petzl created the Verso Belay Device for lovers of the Reverso who want to lighten their rack. Not only is the Verso 31% lighter than the Reverso, it's more compact. Whether you're climbing with a single, half, or twin rope, Petzl's Adaptive Rope Control technology adapts by increasing or decreasing the braking friction to suit the diameter and conditions. When you're climbing partner is working the crux, the Verso's asymmetrical grooved sidewalls decrease friction for ease when taking up slack. Use this belay device with asymmetrical biners for max efficiency.