5Pcs 8-Shaped Aluminum Carabiner Clip Snap Hook Keychain Hiking Buckle Tools This is a aluminum alloy carabiner. It's very light. It can be used for hiking, hanging tent, hanging equipment, hanging pot, hanging bags, hanging key rings, etc. However, we don't suggest that you use this for mountain-climbing, rock-climbing and other aloft games and sports. You need more professional tools for that. Material: Alloy. Colour: Silver Gray Size: About 68*33mm/2.68*1.30"