After connection to a compressed air system, there is a negative pressure, so the device is firmly sucked on the bodywork – dents can now be easily pulled out by pressing the hammer – with 3 interchangeable suction heads: diameter 60 mm, 120 mm, 150 mm – 1400 g impact weight – 6.3 inch compressed air connection – air consumption: 113 L/min – length approx. 620 mm working pressure: 6.3 to 10.3 bar (90 to 150 PSI) for optimal working even with the smallest adapter is a pressure of min. 10.3 bar required.