Features Damping And Low Noise: Pneumatic Screwdriver Made of Excellent Alloy Steel Material, Durable. The Main Body Is Covered with Matte, Which Can Reduce Grinding Vibration. There Is A Silencer Tube In The Air Pipe to Ensure Quieter And Less Noisy Operation Compact And Light: Air Screw Driver Adopt Compact Design, Comfortable to Hold, Small Size, Light Weight, Trigger The Installation of Safety Devices to Prevent Sudden Start Self Locking Structure: Impact Air Screw Driver with Self Locking Chuck Structure, High Accuracy Manufacturing, The Bit Is Not Easy to fall off Non Slip Spindle: Drive Air Impact Wrench with High Accuracy Concentric Spindle, Concentrated Strength, Screws Do Not Slip Or Shake Applicable Scenario: Impact Screwdriver Is Suitable for Use in Many Different Scenarios, Often in Factory Assembly Line Work, Repair, Install And Remove Screws, Etc. Specification: Item Type: Pneumatic Screwdriver Material: Alloy steel Chuck: Approx. 4 ~ 6mm / 0.16 ~ 0.24in No Load Speed: 12000RPM Air Pressure: 90Psi Torsion: 40-60N/M Air Inlet: 1/4in Package List: 1 x Air Screw Driver 1 x Regulating Valve 1 x Intake Joint 1 x Screw Driver Bit 1 x Hanging Ring 1 x Thumb Lock Package List 1 x Air Screw Driver 1 x Regulating Valve 1 x Intake Joint 1 x Screw Driver Bit 1 x Hanging Ring 1 x Thumb Lock