The Master Lock No. 131T Covered Solid Body Padlocks feature a 1-3/16in (30mm) wide black vinyl covered body for scratch and corrosion resistance. The 3/16in (5mm) diameter shackle is 5/8in (16mm) long and made of hardened steel offering extra resistance to cutting and sawing. 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.