[NEW VERSION]The upgraded version of the pneumatic chamfering machine, the new design adopts a new shell with high-quality bearings, equipped with high-precision heat-treated tungsten steel blades, 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