Features 1、Suitable for surface grinding, deburring, polishing and shaping of metal parts, wood components, rubber tires, castings, etc. 2、The movement is precisely processed, with superior quality, stable and reliable. 3、Small size and light weight, convenient operation, can improve work efficiency. 4、Smoothly running, stable and wear-resistant, fast speed and with good performance. 5、Complete tools, you can operate it yourself, suitable for DIY enthusiasts. Specification Item Type: Mini Pneumatic Polishing Machine Material: Alloy steel Body Length: Approx. 115mm / 4.5in Grip Diameter: Approx. 17mm / 0.7in Head Diameter: Approx. 27mm / 1.1in Grinding Disc Diameter: Approx. 30mm / 1.2in Working Pressure: 0.5-0.7MPA Free Speed: 23500rpm Package List 1 x Straight Screwdriver 1 x Nut 1 x Connector 2 x Fixed Plug 1 x Protection Tube 3 x Diaphragm 1 x Grinding Disc 1 x Polishing Machine 1 x Air Pipe