Master Lock 1-7/8 in. W Steel Dual Ball Bearing Locking Padlock Keyed Alike

The 5/16in (8mm) diameter octagonal shackle is 1-1/2in (38mm) long and made of Tough-Cut�?boron-carbide, 50% harder than hardened steel, offering maximum resistance to cutting and sawing. The 4-pin cylinder prevents picking and the dual locking ball bearings provide maximum resistance against prying and hammering.