The American Lock A1305BLU solid aluminum padlock features a 2 in (51 mm) W aluminum blue body and a 1-1/8 in (29 mm) H, 3/8 in (10 mm) Dia boron shackle for superior cut resistance. Dual ball bearing locking mechanism resists pulling and prying and 5-pin APTC12 rekeyable cylinder is pick resistant and has tens of thousands of key changes.