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 thicknessMATERIAL metalSWIVEL FLEXIBILITY The lanyard hooks with a full capable swivel lobster clasp claw for easy use and you can rotate it any directionMULTIPURPOSE These keychain set can be used for making handbags, dog collars, straps, hammocks, harnesses, key chains, belts for jeans skirts, armor, tote bags, lanyards and other : 60 piecesColor: SilverPackage Include:30 pieces swivel snap hooks30 pieces D ringsOnly 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.