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