Made of High Quality Aluminum Alloy with a Polished Finish, Ultra Light Yet Strong, & Tough Enough to Resist Water & Abrasion. with D Shape Quick Spring Loaded Gate Design, Screw Can Lock the Carabiner to Hold the Bag, Water Bottle, Keyring or Other Things & Avoid Falling Off.3.2 Inch D-ring Carabiner Clips is Compact, with Palm Sized Design, Which Can be Operated with One Hand, You Can Take These Small Carabiners with You Anywhere. Suitable for Hanging Kettle & Keyrings, Fixing Dog Leashes, Connecting Tent & Ropes, Great for Outdoor Activities Like Backpacking, Camping, Hiking, Trekking, Cycling, Fishing, Hunting (not for Climbing). Suit Your Household & Outdoor Needs Well.