Features: Uniform sand, wear-resistant, long service life and not easy to burn the workpiece,with a good surface quality,suitable for grinding ,polishing process. Suitable for the cutting tool's end face,surface and the cutter edge grinding and grinding various kinds of serrations. The angle is less than 30°, and it can sharpen various milling cutter reamers, etc, and the effect is excellent. Mainly used for grinding carbide and hard steel, stone, metal and other processing and polishing, mainly used in high hardness alloy knives and carbide alloy saw blade, serrated grinding process. Timely customer service can help you solve all the customer complaints. Specifications: Material: Diamond Size: 100x20x10x5mm/ 3.94x0.79x0.39x0.2inch 125x32x10x8 mm/4.92x1.26x0.39x0.31inch 150x32x10x8mm/5.91x1.26x0.39x0.31inch Color:As Picture Shows Package Includes: 1 Set Grinding Wheel note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you place order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!