Feature: 1. The high‑quality assembly process of this grinding machine, the high‑hardness helical gear can confirm the durability of the tool. 2. This grinding machine has high rate and high grinding rate, which improves industrial efficiency. 3. The grinding machine has a wide range of applications and can be used as a grinding tool in many industries. 4. The pneumatic angle grinder is light and simple in layout, easy to hold, powerful in power, and cost‑effective. 5. This grinder can be used for polishing and polishing marble, granite and other stones. Specification: Item Type: Angle GrinderMaterial: Plastic + Stainless Steel No-load Rate: 4300RpmAir Inlet Size: G1/4 inch Suggested Inner Diameter of Air Tube: Approx. 5mm / 0.2in Uses: Widely used in polishing and polishing of marble, granite and other stones Scope of Application: Marble, stone polishing and waxing Series: Water Mill Connector Type: Japanese style Working Pressure: 0-90psi. Package List: 1 x Angle Grinder1 x Wrench1 x Grinding Wheel1 x Air Tube1 x Brass Fitting1 x User Manual