39*20mm, professionally made of zinc alloy.Strong, stable, lightweight, durable and rust-free.[Rotatable] - This alloy key ring hook can be rotated 360 degrees, no need to worry about tangles.Of course you can use it.[Easy to Use] - The swivel carabiner can be opened with a gentle push and easily connected to other accessories, making it very convenient to use.[Multipurpose] - This keychain kit can be used to make handbags, dog collars, harnesses, cat hammocks, puppy carriers, key rings, denim skirt straps, armor, handbags, key chains and other DIY crafts.[Quantity] - 24 pieces D-ring carabiners are a must-have combo for DIY clips and fashion jewelry.