UIAA CERTIFIED HEAVY DUTY: STURME heavy duty screwgate locking carabiner has UIAA Certification (Certification No. CHN 19-5541) with super strength and safety. It can hold up through a full lead climbing fall, suitable for mountaineers, rock climbers etc 25KN CARABINER: The major axis strength reaches 25KN(5623 lbs), locks up automatically with the twist lock system, which makes it easy and safe to connect the protector and the belt THICK SIZE AND SOLID MATERIAL: The screwgate carabiner size - the height: 3.92 inches, the widest width: 2.38 inches, the gate opening: 0.6 inches; the weight is only 63g. It is made of top-grade aerospace aluminum 7075, smooth EASY TO USE WITH ONE HAND: The 25KN carabiner is convenient to operate with just one hand. You can roll the lock with your thumb to unlock and open one-handed, and then you can do whatever keeps you safe or something more important with your other hand PERFECT FOR OUTDOORS: STURME large carabiner is strong and durable, very suitable for outdoor sports, such as mountain climbing, camping, hiking, backpacking, boating, etc. But not for rappelling sports or fall protection equipment at work Product description Heavy-Duty and Durable. Max Vertical Strength: 25KN (5623lb) Max. Lateral Strength: 8KN (1800lb) fully tested locking mechanism, reliable! Upgrade D-shaped design for 2024 The design makes it easy to connect the protector and belt, safer Anodized surface layer wear-resistant, made from lightweight 7075 aircraft aluminum. anti-rust,anti-skid bright color, non-toxic and harmless material. Never Rust! You can definitely use it for many years.(Up to 5 years) Lightweight Each climbing carabiner weighs only 2.1oz. each, which equals to the weight of 4 grapes only. Thus these climbing carabiners are perfect for minimizing the weight of your gear during any adventure. Hanging Hammocks Carabiners for hammocks, hammock chairs, swings, yoga swings, hanging punching bags, etc Light Weight And Strong Carabiners for Abseiling, tree climbing, hiking, etc. outdoor movements. Multi-purpose, heavy-duty, lightweight, durable, rustproof. rated at 25KN features weight limit up to 5623lbs. Better Security Working at height, carabiners for working at height. Fix heavy objects on a pickup truck or hang heavy objects, heavy-duty carabiners, small and portable, rescue tasks, give you better security!