1、Pneumatic Tool: Manual sander polishing machine is driven by compressed air, energy saving and environmental protection, easy to operate. 2、13000RPM and High Efficiency: Air sander with 13000RPM high speed, suitable for a variety of fine mirror polishing, efficient and durable. 3、Standard Size: This pneumatic grinder has a standard interface and is available in 1/4in air inlet size and 5in grinding disc size for easy installation and use. 4、Wide Range of Application: Air sander grinder working pressure is 0.6‑0.8MPA, widely used in auto, furniture, hardware electronics and other products rust removal and grinding. 5、Vacuum Pipe: With the function of vacuuming, the grinding disc has a vacuuming pipe directly through the pipe to absorb dust, clean and convenient.