Air Hammer Professional Handheld Pistol Gas Shovels Small Rust Remover Cutting Pneumatic Tool Air Chisel Description: Function: trimming Piston diameter: 19(mm) Piston stroke: 45 65 85(mm) Impact frequency: 1500 3500 2200(hz) Cylinder diameter: 39(mm) Air inlet size: 1/4(inch) Recommended inner diameter of trachea: 3/8(mm) Working pressure: 6.3-8(Mpa) Total length: 220 305 355(mm) Specifications: 1. Excellent material: metal cylinder shell, full polished handle, durable 2. Blade a variety of specifications: (handle has round and hexagonal 2 kinds) alloy blade high hardness a variety of head design function 3. Air pressure regulating valve rod: it is smaller in the clockwise direction and larger in the counterclockwise direction. Generally, it is opened to the maximum when leaving the factory. 4.3 specifications of air shovel set: 150/190/250 three kinds of air shovel, specifications 5. Small body shift and easy to use: cylinder heat treatment, smooth operation and long service life 6. Strong spring: spring table gold manufacturing, good elasticity is not easy to break, not easy to deformation 7. Press switch: key press, easy and labor-saving 8. Air inlet air pressure adjustment is convenient: net air inlet to prevent foreign matter from entering the bad machine Package Included: 1 * Air Shovel Set