The Master Lock No. 7042 ProSeries® Solid Body Padlock features a 1-3/4in (44mm) heavy hardened steel body with chrome rustproofing and a 1-3/16in (30mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for superior cut resistance. Padlock is available with or without core with choice of 22 Key-in-Knob keyways to match this padlock to your security door locks.