Upgraded pneumatic chamfering machine, design adopts shell with bearings, equipped with high-precision heat-treated tungsten steel blades, high cutting efficiency, long service life. 5-speed air valve adjustment thickened knob, adjust the required gear speed; 0.1mm-1.5mm chamfer size can be adjusted; 360-degree rotating exhaust port, heat dissipation, work efficiency; safety switch is used to prevent accidental touch. Free speed can reach 30000RPM, air consumption is 0.4/min. Can withstand high impact and high speed, high concentricity, low vibration, low loss; the speed is improved, and the chamfer is smoother. Using the thinnest outer 1mm hexagon nut to lock, it can be chamfered in the narrowest and shallowest space. Suitable for irregular chamfers, such as straight edge chamfering, inner and outer round hole chamfering, irregular chamfering, and keyway polygon chamfering. Used for metal trimming and rounded R side. Material:Metal colour:silver Package Contents: 1 * manual pneumatic trimming machine 2 * tungsten steel blades 4 * bearings 2 * small wrenches 1 * 1/4 inch interface