Master Lock 120D Wide Solid Padlock Brass The Master Lock No. 120D Solid Brass Padlock features a 19mm wide solid brass lock body that is strong, durable and resists corrosion. The 4mm diameter shackle is 11mm long and made of steel, offering resistance to cutting and sawing. Type: Lock Model or Style: Padlock Color: Brass Size: .75" W Material: Brass Function: Lock Btu: N/A