Black Diamond Vaporlock Twistlock Carabiner Gray One Size. Used with a belay device it adds extra friction for rappelling and lowering; it can also be used with a PAS or as part of an anchor for extra security. Specifications for Black Diamond Vaporlock Twistlock Carabiner: Manufacturer: Black Diamond Size: One Size Color: Gray Fabric/Material: Aluminum Steel Plastic Weight: 59 g Last Chance: Yes Features of Black Diamond Vaporlock Twistlock Carabiner Increases friction up to 30percent when lowering or rappelling with an ATC Munter hitch compatible on ropes up to 9.4 mm Keylock nose prevents snagging Dual action Twistlock sleeve Type H or HMS connector. For dynamic belaying using a Munter hitch or belay device Package Contents: Black Diamond Vaporlock Twistlock Carabiner Black Diamond BD2102031003ALL1: Vaporlock Twistlock Carabiner Gray One Size