Materials: MetalColor: At your choiceStyle: 11 stylesPeople use it to prevent phone number cards, keys and lost pets and key fobs.Quantity: 1 pieceSize:Style 1: Total length * width 55 x 21mm, key ring diameter 55mm Style 2: Total length * width 55 x 21 mm, key ring diameter 55 mmStyle 3: Total length * width 55 x 21 mm, key ring diameter 55 mmStyle 4: Total length * width 50 * 15mm, key buckle inner diameter 22mm, horseshoe buckle inner diameter 15mmStyle 5: Total length * width 50 * 15mm, key buckle inner diameter 22mm, horseshoe buckle inner diameter 15mm p>Style 6: Total length * width 50 * 15mm, key buckle inner diameter 22mm, horseshoe buckle inner diameter 15mmStyle 7: Total length * width 50 * 15mm, key buckle inner diameter 22mm , horseshoe buckle inner diameter 15mmStyle 8: Total length * width 50 * 15mm, key buckle inner diameter 22mm, horseshoe buckle inner diameter 15mmStyle 9: Total length 13 cm, horseshoe buckle I inner diameter 15 mmStyle 10: Total length 13 cm, inner diameter horseshoe buckle 15 mmStyle 11: Total length 13 cm, inner diameter horseshoe buckle 15 mmScope of delivery:1pc EDC Car Keyring Keychain ToolNote:1.1cm=10mm =0.39inch.2.Please allow 1-2mm error due to manual measurement and make sure you do not mind before ordering.