Compact Electric Grinding Pen Nail Art Polishing Machine Metal Lettering Carving Engraving Grinding Device USB Rechargeable 3 Gears of Speeds Adjustable It is a quality electric grinding pen that is compact in size, lightweight and portable, easy e, and convenient for detailed engraving. Three-speed adjustable gears, with speeds of 5000r/min, 10000r/min, and 18000r/min, you can adjust the rotating speed you want for different uses. Wide applications, it can be used for grinding, polishing, engraving, drilling, cutting, and other grinding work, suitable for mold polishing and grinding, handicraft trimming and shaping, die-casting deburring, and other industries. Features: Lightweight and portable, compact size for easy operation, which is convenient to do detailed engraving. Made of aluminum material, elegant and exquisite matte surface appearance design, streamlined shape fully reflects the concept of ergonomics. Copper motor design, strong and powerful, high temperature resistant, practical and can provide high working efficient. 3 gears of speed adjustable, with speeds 5000r/min10000r/min and 18000r/min, you can adjust the working speed you want for different usage. Equipped with electric quantity indicator function, different quantities of indicator lights corresponding different remaining electric quantity. USB Type-C rechargeable design, can be connected to a variety of ports such as chargepal, charging plugs, notebooks and etc.. Equipped with high precise chuck, with 2.35mm clamping diameter, you can change the collet easily according to your demands. High concentricity of grinding head, stable rotation speed, no shaking, precise processing with low noise. Suitable for apply on wood board, ceramic, gypsum, nail art. Widely applications, it can be used for grinding, polishing, engraving, drilling, cutting and other grinding work, suitable for nail art grinding and polishing, mold polishing and grinding, handicraft trimming and shaping, die-casting deburring and other industries. Specifications: Name: Electric Grinding Machine Material: aluminum Color: silver, blue, red (optional) Battery: 1 * 3.7V, 300mAh battery (included) Working voltage: DC3.7V Input voltage: 3.6V Rated power: 8W Clamping diameter: 2.35mm Clamping depth: 25mm Speed: 5000-10000-18000r/min Item size: 126 * 15 * 15mm / 4.96 * 0.59 * 0.59in Package size: 182 * 52 * 20mm / 7.17 * 2.05 * 0.79in Package weight: 100g / 3.53ounce Packing List: 1 * Electric Grinding Machine 1 * USB Cable 4 * Grinding Bit 1 * Storage Box