【Specifications】Diameter 4.5"(115mm), Bore 7/8"(22.23mm), with a washer 7/8"-5/8"(22.23mm-15.875mm), Diamond Height 25mm, Segment Thickness 1.7mm, Diamond Grit #60/70 【Application】Suitable for dry or wet cutting and grinding of Ceramic Tile Porcelain Marble Artificial Stone Quartz, etc 【High Performance】Hot pressing sintering process and high quality diamond provide better performance and longer service life 【Unique Detail】Special triangular design and double-sided 25mm diamond height offer fast and efficient cutting and chip-free. Can cut in a straight line or at an angle. It can grind edges and grooves horizontally 【Recommended Machine】Fits on Angle Grinder and Circular Saw. Recommended speed 8000RPM, maximum speed 13200RPM