American Lock® safety padlock, non-rekeyable, alike key, solid brass body, 5/16 in shackle dia, 1-1/8 in shackle height, 3/4 in shackle width, boron alloy steel shackle, 1-3/4 in body width, 3/4 in body thickness, 5-pin tumbler cylindrical/dual ball bearing locking mechanism, brass. Master Lock® American Lock® A20KA Non-Rekeyable Safety Padlock, Alike Key, Solid Brass Body, 5/16 in dia Shackle, Brass