The Master Lock No. 527D Covered Solid Body Padlock features a 2 in. (51 mm) wide black vinyl covered body for scratch and corrosion resistance. The 5/16 in. (8 mm) diameter shackle adjusts from 2-3/8 in. (6 cm) to 5-15/16 in. (15 cm) 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.