Aluminum alloy integrated body, dustproof and quick heat dissipation. Speed adjustable to meet different grinding needs. Compatible with 18V-21V battery interface. Compatible with accessories, fine workmanship chuck, sturdy and wear-resistant, not easy to drop the grinding bits. Compact size for easy carrying and storage. Can rotate forward or reverse, suitable for various working environments. Equipped with grinding bits, which can be replaced easily. Knob speed control, convenient and simple to operate. Different batches may have slight variations in appearance, which do not affect functionality. Differences in lighting or display may cause minor color differences in the actual product. Rated power: 40W. No-load speed: 18000r/min. Grinding wheel diameter: max. 3.2mm. Chuck clamping range: 0.4-3.2mm. Color: Blue+Silver. Material: Plastic+Aluminum Alloy. Package Contents: 1 x Grinder with Speeder, 2 x Wrench, 1 set x accessories. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowed error is +/- 1-3cm.