Wide stainless steel body for maximum strength, reliabilty and corrosion resistance. Fully shrouded design minimizes shackle exporsure and protects against bolt cutter attacks. Features 3/8" (10 mm) diameter shackle and is 5/8" (16 mm) long made of hardened steel. 4-pin cylinder prevents picking and dual locking levers provide resistance against prying and hammering. Includes 2 keys. 2-3/4" (70 mm).