The Master Lock Covered Laminated Steel Pin Tumbler Padlock features a 1-9/16 in. (40mm) wide laminated steel body for maximum strength and reliability. The 9/32 in. (7mm) diameter shackle is 1-1/16 in. (27mm) long and made of hardened steel, offering extra resistance to cutting and sawing. A blue weather resistant thermoplastic shell is designed to add protection against moisture, dirt and grime. The 4-pin cylinder prevents picking and the dual locking ball bearings provide resistance against prying and hammering. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.