Heavy Duty Twistlock D-Shape Buckle Rock Climbing Carabiner Replacement Aluminum Alloy Mountaineering D Ring Clip Features: Durable: Made of aluminum alloy, high hardness, durable and wear-resistant, not easy to damage. Easy to buckle and not fall off, light weight and easy to carry. The nut buckle design is firm and not easy to loose, and the mounting capacity is strong. It can be used for outdoor mountaineering and camping activities, it is easy to use, and it is a practical outdoor accessory. D buckle design, smooth lines without burrs, for sharp angles. Specifications: Material: aluminum alloy Color: Black Green Purple Yellow Gray Size Approx. 8.1x4.2cm/3.19x1.65inch Package Includes: 1x Climbing Carabiner note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.