Material:Steel (hardened) Color:Black/Color:Yellow Chain:Φ8mmX1200mm ChainQuantity:1pc. Internal dimension:Width 17mm X Length 51mm ChainQuantity:1pc. Ma external dimension:Width 33mm X Length 67mm O-ring outer diameter:61mm O-ring I.D.:45mm Pad lock:Φ12mmX12mmLongGuide,3 keys included (Main key has LED Lamp) Overall Weight:2773g