Screw Lock Climbing Carabiner &ndash; 25KN Heavy Duty Auto Locking Fall Protection Climbing Carabiner for Maximum Safety for you & your buddies provided by the sturdy autolock spring & screw clip 25KN load rated device will safely support your weight as well as any packs or gear you bring with you on the mountain. Extra Large 4.5 inch Locking Carabiner. Easily remove & insert your rope in & out of this wide 0.9-inch toothless gate to keep moving quickly up the rock wall. Hot forged for improved strength & durability over competitors.