The HP-2 is the number one selling hand rivet in the industry. Know and trusted for durability, quality and performance, The HP-2 is often copied but never duplicated. Its square shoulder fulcrum pin of cold-formed heat-treated steel prevents pin rotation that can elongate the engaging holes and cause premture tool failure in imitation tools. The HP-2 sets-up to3/16'' steel rivets and comes with four mounted nosepieces (3/32'', 1/8'', 5/32'' and 3/16'') and a service wrench.