MASTER LOCK MLKM40NUM EXCELL COMBINATION DISCUS PADLOCK 70MM Tough cut patented octagonal boron carbide shackles which are 50 tougher to cut than hardened steel Optimum weather resistance with the additional security of a shrouded shackle which is much tougher to pullpry open Padlock has a setyourown 4digit combination for keyless convenience Shackle Diameter 10mm Suggested uses gates sheds storage units fences containers & chains p p