SIZE The swivel hook is .1-5/8 inch (4.1 cm) in length and 1 inch (25 mm) inside width. The D rings are 1 inch (25 mm) inside in length and 3mm in thickness MATERIAL metal SWIVEL FLEXIBILITY The lanyard hooks with a full 360 degree capable swivel lobster clasp claw for easy use and you can rotate it any direction MULTIPURPOSE These keychain set can be used for making handbags, dog collars, straps, cat hammocks, puppy harnesses, key chains, belts for jeans skirts, armor, tote bags, lanyards and other DIY crafts Quantity: 60 pieces Color: Silver Package Include: 30 pieces swivel snap hooks 30 pieces D rings Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.