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. The chamfering size is adjustable. A safety switch helps prevent accidental activation for safe operation. This 45-degree pneumatic mini chamfering machine is compact and lightweight, easy to operate with one hand. The chamfering size and blade can be easily adjusted using the included spanner. C angles are angled and primarily used for metal chamfering, while R angles are rounded and typically used in woodworking. Free speed: 30,000 RPM. Air consumption: 0.4 m³/min. Air inlet port: 1/4 inch PT. Trimming capacity: Chamfering: C0.1–C1.5, ARC corner: R0.1–R1.5. Adjustable depth: 0.1 mm–0.9 mm. The pneumatic chamfering machine features a new design for easy one-handed operation. Chamfering size and gear speed are freely adjustable, making it suitable for chamfering a wide range of materials including metal and wood. Safe to use: The safety switch prevents accidental contact, enhancing user safety. Easy to operate: This mini pneumatic chamfering machine is designed for simple, one-handed operation for quick deburring. Product name: Chamfer Tool Connector: 4 cm Chamfering hole diameter: 8 mm Color: As shown Material: Metal Size: 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 6 x C Angle Blades 6 x R1.5 Blades 6 x Bearings 1 x Connector 2 x Spanner 2 x Sealing Ring Only the above package contents are included.