The Master Lock Solid Die-Cast Combination Padlock 178D offers strength, security, style and weather protection. The padlock allows you to set and reset your own combination with any 4 digit code you choose offering thousands of possible combinations. . The 178D is 2 inches wide and the body's black powder coating makes it deal for marine or other corrosive environments. The 5/16 inch diameter shackle is 1 inch long and made of hardened steel which offers extra resistance to cutting and sawing.Common Uses for the 178DBoatsShedsGatesGaragesStorage LockersWorkshopFencesProduct FeaturesEasy to set & reset - numeric combination2in (51mm) Wide solid bodyHardened steel shackle for extra cut resistance4-digit set your own combination convenience allows for thousands of possible combinationsCombination change key included