Features: Pistol grip needle scaler for removing rust or old paint; Mechanism actuated by air power only, not using springs reduces reaction time and improves the smooth actuation; Specifications: Stroke Length - Max 4.5; Free Speed - 3,500bpm; Weight - 2.1kg; Noise Level - 97dBA; Vibration level - 13.0 m/s²; Avg Air Consumption - 1.3cfm;