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