Product Description The Master Lock No. 120Q Solid Brass Padlocks feature a 3/4in (19mm) wide solid brass lock body that is strong, durable and resists corrosion. The 5/32in (4mm) diameter shackle is 7/16in (11mm) long and made of steel, offering resistance to cutting and sawing.. From the Manufacturer Master Lock 120Q 4-Pack of 3/4-Inch Wide Solid Brass Padlocks - Keyed Alike