【Specifications】4pcs: Diameter 3"(75mm), Bore 3/8"(10mm) , Diamond height 8mm, Diamond thickness 1.1mm, Diamond Grit #60/70 【Application】Designed for dry or wet cutting ceramic tile, porcelain tile, marble, granite. (very hard granite is not recommended) 【High Performance】High quality diamond particles and hot pressing sintering process provide faster cutting speed and longer service life 【Unique Detail】X Mesh turbo rim segment helpful for cooling and discharge of dust. Super thin blade provides chip free cutting, good cutting effect, no edge collapse and less material loss 【Recommended Machine】Suitable for Mini Angle Grinder with 3/8"(10mm）arbor. Recommended speed 11000RPM, maximum speed 19000RPM