This pneumatic chamfering machine offers a wide range of applications for chamfering R and C angles, round holes, irregular edges, arcs, and straight edges on various materials including steel, aluminum, copper, acrylic, and wood. The mini deburring and trimming tool features an air grinder with a 1-5 block valve adjustment and a thickened knob for free gear speed control. Chamfering size is fully adjustable. A safety switch is included to prevent accidental activation and ensure safe operation. This 45-degree pneumatic mini chamfering tool is lightweight, compact, and designed for easy one-handed operation. The chamfering depth and blade can be quickly adjusted using the included spanner. C angles are designed for metal chamfering, while R angles are rounded and suitable for woodworking applications. Free speed: 30,000 RPM. Air consumption: 0.4 m³/min. Air inlet: 1/4 inch PT. Trimming capacity: Chamfering C0.1–C1.5, arc corner R0.1–R1.5, adjustable depth 0.1 mm to 0.9 mm. The tool features a new lightweight design for comfortable handling and precise control. Speed settings are adjustable to suit different materials and tasks. Suitable for chamfering on metal, wood, and other common industrial materials. Safety switch enhances user protection during operation. Easy to use with one hand for efficient deburring and edge finishing. Product name: Chamfer Tool. Connector: 4 cm. Chamfering hole diameter: ≥8 mm. Color: As shown. Material: Metal. Dimensions: 15 x 5.8 cm. Disc diameter: 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 Spanners, 2 x Sealing Rings.