The Master Lock No. 7050KA ProSeries® Solid Body Padlock, keyed alike – multiple locks open with the same key – features a 2in (51mm) wide heavy hardened steel body with chrome rustproofing and a 1-1/2in (38mm) tall, 3/8in (9mm) diameter hardened boron alloy shackle for superior cut resistance. Designed for commercial/industrial applications a dual ball locking mechanism resists pulling and prying and a high security, rekeyable 5-pin cylinder with spool pins is virtually impossible to pick