Features: Lock body is constructed of laminated steel for superior strength Hardened steel, chrome plated shackle resists cutting Brass pin tumbler cylinder for a long lasting, smooth working action Specifications: Size: 30mm/40mm/50mm Shackle length: Standard or Extened shackle Surface: Zinc plated or nickle plated Body material:Laminated Steel Keys: 2 iron keys with nickle plated Mechanism: Double latches Bumper:Black Plastic strips