●Stable and High Quality Our pneumatic chamfering machine is made of high quality imported triangle cutter head, sturdy and durable, stable operation, waterproof and dustproof. Our pneumatic angle grinder can work continuously and will not be heated, it maintains precise assembly with stable performance for a long service life. ●Adjustable speed and angle: the portable air grinder deburring trimming chamfering tool 1-5 block valve adjustment thickened rotary knob, freely adjust the gear speed you need. The chamfer size can be adjusted as desired. The safety switch is used to prevent accidental touch to protect the safety of the user at all times. ●Easy to use: This 45 degree mini chamfering machine pneumatic tools has a new lightweight design, small and exquisite, smooth cut, high efficiency, low vibration, very smooth cutting of carbon steel. Can be easily operated with one hand, and feels more comfortable. ●Stable speed: Pneumatic metal beveling tool chamfering tool can withstand high impacts and high speed, with little vibration, low resistance and lower loss. The speed is increased and the chamfer is smoother, and the chamfering machine is more durable. ●Widely used: C angle, R angle, irregular edge, arc and bore can be beveled on steel and aluminium parts. It is suitable for small jobs and hard-to-reach places, suitable for light grinding, spring edges and rust removal, providing versatility for any task at hand.