RockLock Twistlock Edelrid Screamers not only absorb energy

Screamers not only absorb energy directly because of the stitch ripping effect

7 to 11 mm

and Babsi Zangerl

Designed for rope ascents

featuring the redesigned ATC-XP

RockLock Twistlock Edelrid Screamers not only absorb energyBlack Diamond's largest belay and rappel locker, the Black Diamond RockLock carabiner features a keylock nose, is Munter Hitch compatible and the autolocking twistlock sleeve can be operated with one hand. Now featuring a hot forged lightweight construction, a redesigned spine for better handling, and a larger rope bearing surface for greater durability, the RockLock is the go to screwgate for every day climbing season after season. RockLock Twistlock