The American Lock No. A5100KA Solid Steel Padlock, Keyed Alike – multiple locks open with the same key – features a 1-1/2in (38mm) wide hardened, chrome plated solid steel body to resist cutting, sawing and corrosion and a 1in (25mm) tall, 1/4in (6mm) diameter hardened boron alloy shackle for superior cut resistance. Easy to service with a 5-pin APTC12 rekeyable cylinder, this padlock is ideal for securing gates, sheds, truck/van doors and industrial machinery.