The American Lock No. A7200KA Solid Steel Padlock with Tubular Cylinder, Keyed Alike – multiple locks open with the same key – features a 1-3/4in (44mm) wide case hardened solid steel body and a 1-1/8in (29mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for superior cut resistance. A dual ball bearing locking mechanism resists pulling and prying. The pick resistant rekeyable 7-pin AHTC2, tubular cylinder provides 50,000 key changes and meets NAMA standards.