DIY Keychain Making Kit, Including Alloy Swivel Lobster Claw Clasps, Iron Split Key Rings, PlatinumSize: Swivel Lobster Claw Clasps: about 1.22 inch(31mm) long, 0.49 inch(12.5mm) wide, 0.22 inch(5.5mm) thick, hole: 0.20x0.35 inch(5x9mm), 5pcs; Iron Split Key Rings: about 25x2mm, Inner Diameter: 20mm, 5pcs.