Description This professional tool features a square shoulder fulcrum pin of cold-formed heat-treated steel, which prevents pin rotation that can cause hole elongation and premature tool failure. Other quality features include: precision die-cast, high-strength aluminum alloy body, dropforged carbon steel upper handle; and thick cushion-molded vinyl grips for comfort. The HP-2 sets up 3/16 in. steel rivets and comes with four mounted nosepieces (3/32 in, 1/8 in, 5/32 in and 3/16 in).