Sold per piece. These unique base metal jump ring tools make opening and closing jump rings a breeze: with 3 different sized grooves in the ring to accommodate most types of jump rings, creating jump ring charm bracelets and the like has never been easier. Simply slip on the ring, and place one side of the jump ring in the ring. Use your pliers to open up the other side of the jump ring. Diametre of ring: 19mm, width of first groove: 1.5mm, width of second groove: 1.4mm, width of third groove: 0.85mm. Available in nickel only.