1. Versatility: The drill grinder can not only be used to grind hard materials, but also can be used to grind, grind and polish to achieve a variety of process requirements. 2. Efficiency: The drill grinder uses high-speed rotation to grind, which can quickly polish the workpiece smooth and flat, improving work efficiency. 3. High precision: The drill grinder adopts a precision grinding , which can accurately control the grinding depth and angle, ensuring a more accurate grinding effect. 4. Strong durability: The drill grinder is made of high-quality materials, not easily damaged, and not show performance degradation after long-term use. 5. Easy to operate: The drill grinder is designed to be simple and easy to operate. Colour:Yellow Material:ABS Package Contents: 4 x Drill Bit Sharpening tool 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.