The high concentration of diamonds provides faster cutting speeds, while the high quality of the diamonds provides longer blade life. Special design: Professional tools with excellent cost performance due to the use of high-quality, high-temperature resistant diamonds. Resist shocks and high temperatures, and reduce vibrations thanks to the use of precision tool holders, are more efficient and durable. Grinding segments with heat-treated steel bodies that increase the durability and life of the grinding wheel. Ventilation holes for fast, dry or wet grinding with a long service life. Grinding wheels for angle grinders, used in concrete, marble, granite, adobe, gypsum sandstone, natural slate sandstone, artificial and natural stone, masonry, screed. Aperture: 22.23 mm. Quantity supplied: 1 piece.