Features: The body is selected from aluminum, with forward and reverse stepless speed regulation, no-load speed up to 18000rpm, and chuck clamping ranges 0.4-3.2mm. Comfortable pen-shaped design, comfortable to hold, like a pen in your hand, allows you to work better and reduce fatigue.Ergonomic streamlined design ensures safe and reliable operation. Suitable for grinding pet nails and fine work such as grinding, polishing, engraving and cutting. Featuring a high efficiency motor that delivers power for all your polishing and engraving needs. This electric polishing machine offers dustproof protective and efficient heat dissipation, ensuring reliability. Specifications: Component:Aluminum Power: 40W No-load speed: 18000RPM Grinding wheel diameter: 3.2mm Chuck size: 3.2mm Chuck clamping ranges: 0.4-3.2mm Size:Approx.27x8cm/10.63x3.15inch Package Includes: 1Pc Electric Grinder note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.