[ VERSION]The upgraded version of the pneumatic chamfering machine, the design adopts a shell with high-quality bearings, equipped with high-precision heat-treated tungsten steel , sturdy and , high cutting efficiency, and long service life. [CLEVER DESIGN]5-speed air valve adjustment thickened knob, freely adjust the required gear speed; 0.1mm-1.5mm chamfer size can be adjusted at ; 360-degree rotating exhaust port, good heat dissipation, high work efficiency; safety switch It is used to prevent accidental touch and protect user safety at all times. [STABLE PERFORMANCE]Free speed can reach 30000RPM, air consumption is 0.4/min. Can withstand high impact and high speed, high concentricity, low vibration, low loss, and more ; the speed is improved, and the chamfer is smoother. [MULTI-USE]Using the thinnest outer 1mm hexagon nut to lock the bearing, 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 4 * bearings 2 * small wrenches 1 * 1/4 inch interface Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.