Laminated steel body encased in a high performance thermoplastic cover. Cylinder and dual locking steel levers for pickand pry resistance. Shackle is case hardened. Quick snap cap on the bottom minimizes key cylinder jams caused by dust, dirt and freezing. Keys are nickel plated brass and colored covers that match body colors. Two keys included with No. 312D and three keys included No. 312TR1. 1-9/16" wide case, 3/8" diameter shackle, and 1/2" horizontal shackle clearance.