Product Description The Master Lock 5T Laminated Steel Padlocks with Key feature a 2 in. (51 mm) wide laminated steel body for maximum strength and reliability. The 3/8 in. (10 mm) diameter shackle is 1 in. (25 mm) long and made of hardened boron alloy, offering maximum resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual locking ball bearings provide resistance against prying and hammering. The Lifetime Guarantee provides peace of mind from a brand you know and can trust. From the Manufacturer Master Lock 5T 2-Pack of 2" Wide Laminated Pin Tumbler Padlocks - Keyed Alike