FresKaro 4inches 25kN-5621lbs Climbing Carabiners, UIAA CE Certified, Screw Lock, 7075 Aluminium, Lightweight, Rust Proof, for Mountaineering, Rappelling etc., Multi-ColorsSCREW LOCK A smooth screw locking operation which can be done using just the index finger and thumb, with about 3. 5 turns travel for fully open or locked position for secure locking UIAA CERTIFIED Major axis strength 25kN 5,621lbs, Cross loaded at 7kN, robust and heavy duty, rated for rocking climbing, hiking, rappelling, rescue, locking big adult dogs etc LATEST GENERATION Our current generation has bigger size sleeve, the locking sleeve covers the