The HT50 is made with a chromed steel housing, all steel working parts hardened in a 1,500 degree furnace, and a high impact sure-grip handle. Its reliable and time-proven rear load magazine holds two full strips of T50 staples to minimize loading time. For roofing, insulation, housewrap and other professional jobs, there is simply no substitute. Ideal for insulation, housewrap, roofing underlayment, flooring.