SAVE WEIGHT WITHOUT SACRIFICING PERFORMANCE WITH THE BLACK DIAMOND ATC-GUIDE BELAY/ RAPPEL DEVICE.With machined windows to cut weight, the Black Diamond ATC-Guide Belay/ Rappel Device is one of the lightest ones on the market. Black Diamonds most versatile belay/ Rappel device also features a larger auto-block release hole to accept a small carabiner while also having multiple friction modes and a guide mode that works with one or two climbers. FEATURESMultiple friction modes for belay and rappelMachined windows through device for weight savingsAuto-block release hole accepts small carabinersDurable cable holds its shape and resists getting caught up between ropesGuide mode works with one or two climbersAscending and descendingDependable and smooth operation in all conditions, handling ropes from 7.7 to 11 mm