Upgraded pneumatic chamfering machine featuring a durable shell with high-quality bearings and high-precision, heat-treated tungsten steel cutters. Offers high cutting efficiency and extended service life. Features 5-speed air valve adjustment with a thickened knob for precise speed control; chamfer size adjustable from 0.1 mm to 1.5 mm; 360-degree rotating exhaust port for effective heat dissipation and improved work efficiency; integrated safety switch to prevent accidental activation and enhance user safety. Free speed up to 30,000 RPM; air consumption: 0.4 m³/min. Designed for high impact resistance and high-speed operation, with high concentricity, low vibration, low energy loss, and smoother chamfering results. Compact design uses a 1 mm hexagonal nut to secure the bearing, enabling chamfering in tight and shallow spaces. Suitable for straight-edge, inner/outer round-hole, irregular, and keyway/polygon chamfering. Ideal for metal trimming and rounding R edges. Material: Metal Color: Silver Package Includes: 1 × manual pneumatic trimming machine, 2 × tungsten steel cutters, 4 × bearings, 2 × small wrenches, 1 × 1/4-inch air interface. Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.