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 various materials such as steel, aluminum, copper, acrylic, and wood. The mini deburring trimming chamfering tool features an air grinder with 1-5 block valve adjustment and a thickened knob, allowing free adjustment of gear speed. Chamfering size is adjustable. A safety switch helps prevent accidental activation and ensures safe operation. This 45-degree pneumatic mini chamfering tool is lightweight, compact, and easy to operate with one hand. The chamfering size and blade can be easily adjusted using the included spanner. C-angle blades are angled and primarily used for metal chamfering, while R-angle blades are rounded and suited for woodworking applications. Free speed: 30,000 RPM. Air consumption: 0.4 m/min. Air inlet port: 1/4 inch PT. Trimming capacity: Chamfering C0.1C1.5, arc corner R0.1R1.5, adjustable depth 0.1 mm0.9 mm. The pneumatic chamfering machine features a lightweight design for easy one-handed operation. Gear speed and chamfering size are freely adjustable, making it suitable for chamfering various materials including metal and wood. Safe to use: The safety switch helps prevent accidental contact, enhancing user safety. Easy to operate: This mini pneumatic chamfering tool is lightweight and designed for quick deburring with one hand. Product name: Chamfer Tool Connector: 4 cm Chamfering hole diameter: 8 mm Color: As shown Material: Metal Dimensions: 15 x 5.8 cm, Disc: 4.8 cm, Body Diameter: 3.2 cm Package Contents: 1 x Black Pneumatic Chamfering Machine 2 x Bearing Fixing Screws 4 x Blade Fixing Screws