Master Lock 131T Covered Aluminum Keyed Alike Padlocks, Two Pack, Black, 2 Count The Master Lock 131T Covered Aluminum Keyed Alike Padlocks features 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.. Features Indoor and outdoor padlock with key is best used as a locker lock and storage lock Key lock is constructed with a black vinyl-covered aluminum body for scratch and corrosion resistance and steel shackle for durability Four-pin cylinder and dual locking lever mechanism for pick and pry resistance 1-3/16 in. (30 mm) wide lock body; 3/16 in. (30 mm) diameter shackle with 5/8 in. (16 mm) length, 9/16 in. (14 mm) width Includes two padlocks, two keys; Keys open both locks (matching color key head for added convenience) USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.