: Good thermal conductivity can prevent , cracks of the workpiece, and greatly improve the processing quality. ENERGY SAVING: Good grinding performance ensures a reduction in grinding performance and energy consumption. MAIN FUNCTION: Efficiently grind hard-to-machine materials such as ceramics, stone, concrete, etc. Can be used with grinding and cutting tools. ADVANTAGE: High wear resistance makes diamond grinding wheel a tool that can perform both high efficiency and precise machining. CAUTION: Avoid dust, please wear protective glasses, earplugs and a good dust mask during use. The diamond grinding wheel has strong abrasive grains, long service life and low wear, which means that the diamond grinding wheel gives full play to the wear resistance and good grinding effect. This is an perfect tool for grinding fragile materials (such as ceramics, stone, concrete, etc.). Outer diameter: 100 mm/3.94 inches Hole diameter: 22.23 mm/0.88 inch Thickness: 5.3 mm/0.2 inch Approximate weight. 220 grams Material:Diamond colour:red Package Contents: 1 x red large agglomerated bowl grinding wheel 1 x white washer Only the above package content, other products are not included. Note: Light 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.