Feature: Adjustable speed, high precision, high efficiency, long service life. Double hammer strike structure, strong moment of force, easy to use. 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-8141Material: Aluminum alloy & Iron & SteelWeight: 804g/28.4ozColor: as pictures shownBolt Capacity: 4-6mmMaximum moment of force: 35N.mChuck Size: 1/4No load speed: 9000rpmAir Inlet Size: 1/4Working Pressure: 0.62mpaAir Screwdriver: 21.5cm/inchPackage List:1 x Air Screwdriver1 x Screwdriver Bit1 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.