The Master Lock 1921 Laminated Steel Padlock offers better resistance against impact and hammering. Fitted with a hardened boron alloy shackle for superior cut resistance. Its 4-pin cylinder prevents picking attacks and its dual ball bearing locking mechanism offers better resistance against pulling and prying attempts. Fitted with an exclusive cover adorned with the brand's emblematic lion. The cover helps to protect the padlock from harsh elements. The Limited Lifetime Warranty provides peace of mind from a brand you can trust. Specification: Shackle Height: 29mm Shackle Diameter: 8mm