This pneumatic chamfering machine has a wide range of applications and can chamfer R/C angles, round holes, irregular edges, arcs and straight edges on a wide variety of materials such as steel, aluminium, copper, acrylic and wood. Mini deburring trimming chamfering tool features air grinder 1-5 block valve adjustment thickened knob, can adjust the gear speed freely. Chamfering size can be adjusted at . Safety switch is used to prevent accidental touching and safe use. This 45 degree pneumatic mini chamfering machine air tool is , small and delicate, easy to operate with one hand. You can easily adjust the chamfering size and change the blade by using the matching spanner. C angle blades are angled and are mainly used for metal chamfering, R angle blades are rounded and chamfered and are used in woodworking. Free Speed 30000 RPM, Air consumption 0.4/min, Air inlet port: 1/4 inch PT. Trimming Capacity: Chamfering: C0.1-C1.5, ARC corner:R0.1-R1.5, Adjustable depth:0.1mm-0.9mm. The