Extruded wire tapping and cutting wire tapping different points of discharge without cutting its characteristics when tapping, and the machined surface of the internal thread for pressure build surface appearance beautiful, smooth, continuous wire material did not cut the thread strength increased by about 30% accuracy stability, because it is squeezed by the large central portion endurance, torque, strength, wire-tapping live longer easily broken. Big squeeze wire tapping applicable material ductility. Iron, copper, aluminum, stainless steel plate and tube processing