The Master Lock No. 527D Covered Solid Body Padlock features a 2in (51mm) wide black vinyl covered body for scratch and corrosion resistance. The 5/16inin (8mm) diameter shackle adjusts from 2-3/8in (6cm) to 5-15/16in (15cm) long; and is made of vinyl-clad hardened steel, offering extra resistance to cutting, sawing and surface marring. The 4-pin cylinder prevents picking and the dual locking levers provide resistance against prying and hammering. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.