Colour-Black Material-Aluminum Alloy Brand-Poemtian D-Shape-Lock type Description: Mountaineering carabiner is made of aluminum alloy material, durable and can be used for a long time. Durable spring opening design, easy to use, not easy to break or deform. Excellent craftsmanship, smooth and no sharp edges, perfect for organizing and identifying keys or other small items. Small size and light weight, easy to carry and store. Perfect for key rings, umbrella cords, parachute cords or other outdoor items. Color:black Material:aluminum alloy Size:about 4.5x2.1x0.4cm/1.77x0.83x0.16inch Package included: 2 x Mountaineering Buckles Attention: 1. Manual measurement, slight error in size. 2. Due to different screens, the color may be slightly different. ã€Durable Material】Made of aluminum alloy material, durable and can be used for a long time. ã€Easy to Use】Durable spring opening design, easy to use, not easy to break or deform. ã€Fine Workmanship】Excellent craftsmanship, smooth and no sharp edges, perfect for organizing and identifying keys or other small items. ã€Widely Used】Perfect for key rings, umbrella cords, parachute cords or other outdoor items.