High concentrations of diamond enable faster cutting speeds, while high-quality diamond extends blade life. Special design: professional tools have excellent performance in terms of cost due to the use of high quality, high temperature resistant, shock resistant and high temperature diamonds. They reduce vibration through the use of precision tooling in the tool handles. making them more efficient and durable. The grinding wheel part adopts heat-treated steel body to improve the durability and life of the grinding wheel. The vents can be sanded quickly , dry or wet, for a long life. Angle grinder for concrete, marble, granite, adobe, gypsum sandstone, natural slate, artificial and natural stone, masonry, screed. p> Note: The data is all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the item actual received.