Features: Adjustable speed, high precision, high efficiency, long service life. Double hammer strike structure, strong moment of force, easy to use. Convenient one hand operation with safety trigger for easy and safety start. Straight handle design, compact appearance, comfortable handle, easy to operate. Reversible rotation, high speed, low noise, good mechanical performance. Suitable for the fastening and dis-assembly of screws in the light industry field such as machine manufacturing and metal auto repair. Specification:Model: KP-814Material: Metal Weight: 758g/26.7ozColor: As pictures shownMaximum moment of force: 40N.mAir Consumption: 0.22m³/minChuck Size: 1/4"Rotation: Positive & Negative steeringNo load speed: 9000rpmAir Inlet Size: 1/4"Working Pressure: 0.6mpaHandle Type: Straight shank Speed Adjustment: YesAir Screwdriver Length: 20.5cm/8.1inchPackage List:1 x Air Screwdriver1 x Screw Head1 x HookNote:1. Please allow slight error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.