Master Lock® safety padlock, commercial grade non-rekeyable, alike key, laminated steel body, 3/8 in shackle dia, 1 in shackle H, 15/16 in shackle W, boron hardened alloy steel shackle, 2 in body W, 4-pin tumbler, 2 bumpers. Master Lock® 5KA-A445 Commercial Grade Non-Rekeyable Safety Padlock, Alike Key, 3/8 in Shackle, Laminated Steel Body