Pandahall 1 Box 8x4mm 6 Color Iron Bead Tips Nickel Free Size: about 4mm wide, 8mm long, 3mm inner diameter, hole: 1.5mm. Color: Antique Bronze & Red Copper & Golden & Silver & Platinum & Black Material:Iron; Finish: Nickel Free; Usage:Terminators Used to cover the knots on the end of beaded necklaces or bracelets to join to a clasp