It is made of Aluminum alloy, it is anti-oxidation, waterproof, wear-resistant, hard, and light, the double-clip design easily connects two things together. It’s very sturdy and durable, made with great quality aluminum, the best tool for connecting things, and provides a long-lasting life. Ideal for hanging bottles, hanging bags, hanging key rings, connecting tents, ropes tents, climbing ropes, kettles, backpacks, key rings, and a wide variety of uses. Dimensions: Length: 2-5/8 inch, Width: 1-1/4 inch, Max load weight: 15 kg. Package Includes Pack of 2 Marine City Aluminum Alloy 8-Shape Carbineer Buckle Snap Hook. Here at Marine City Hardware, we specialize in marine hardware products. We are all family and are all working together to bring our customers exactly what they need. Our motto is high quality and taking care of our customers. Everything is double-checked before being sent out to ensure the highest quality.