Size hooks size 31x11mm / 1.22x0.43in Keyring inner diameter 20mm / 0.78in, outer diameter 25mm / 0.98in Enough set for you to make kinds of as you like Application The hooks with rings can be used for making keyring lanyards, keychains, jewelry making， bag charm, backpack pendant ornaments, dog collars, wristlets and other Whether at home, work, or school, these versatile snap hooks are perfect for organizing and carrying various keys, making your daily life more efficient hooks with keyrings Our keychain snap hooks have full 360 degree, easy to use and so you can rotate it any direction keychain clip Our lobster clasps and chains rings are zinc alloy;, and anti-break, safe for use