The Master Lock No. 6125KALJ ProSeries® Weather Tough® Covered Laminated Padlock, Keyed Alike – multiple locks open with the same key – features a 2-3/8in (60mm) wide heavy steel body to withstand physical attack and a 2-1/2in (64mm) tall, 3/8in (10mm) diameter hardened boron alloy shackle for superior cut resistance. The exclusive cover protects this padlock from harsh elements & a high security, rekeyable 5-pin cylinder with spool pins is virtually impossible to pick.