Features a 1-3/4 in. (44mm) wide laminated stainless steel body for maximum strength, reliability and weather resistance. The 5/16 in. (8mm) diameter shackle is 1-1/2 in. (38mm) long and made of stainless steel, offering extra resistance to cutting, sawing, and weather. The 4 pin cylinder prevents picking and the dual locking ball bearings provide resistance against prying and hammering.