Crimping Tool Jaw; Item Pressing Jaw; Designated Size 1/2 Inch; Used On Power Tool Rigid Compact Press Tool; Used On Equipment Part No RP-240/RP-241/RP-200/RP-210/RP-100; Application Heat Pump, Commercial and Residential Air Conditioner, Refrigeration, Transportation. Specially designed to join copper piping without the use of a brazing torch.