Spiral wire tapping spiral wire-tapping works using compressed air, safe and fast and efficient; less gas pressure and gas (0.3-0.8mpa), large torque output; the various steel, iron, copper, aluminum, plastic and other materials attack wire; entrainment tube overload protection device, wire tapping less damage, high precision thread; simple and lightweight, completely without experience and strength; processing costs than the use of CNC machining centers, milling machines or hand tapping, tapping with much lower; Heavier work was not required positioning device or mobile, large work area (within a radius 100-2000mm range); rapid fast positioning and high cutting speed, increased production capacity; through holes or blind holes, wire-tapping are not broken, vertical, (universal) angle can tap; large machining range: (M3-M24). Products, life assurance. Spiral wire tapping torque with precision collet, collet with overload protection device itself. Principle collet torque using automobile clutch, even a blind hole, do not have to worry about broken wire tapping, effectively control the torque, ensure tap hardly broken or damaged; Neck accuracy 7 or above, through holes or blind holes are not broken teeth, broken teeth phenomenon occurs when tapping.