Package Include-----5pcs 1- 9/16 Inch(40mm) mini blades; 1pc 5/8''-11 flange; 1pc screwdriver; diameter 40mm; diamond height 8mm; thickness 1mm; diamond grit #100/120 Application-----Used for glass, jade, crystal, ceramic tile, marble, soft artificial stone and other materials cutting and engraving work. Wet and dry use, add water to use, the service life is longer High Quality Material-----Selection of high-grade quality diamond raw materials, vacuum brazing technology processing, long life, more durable, cost-effective Ultra-thin Blade Design-----Cutting glass, jade, crystal, tile, marble and other materials, will not cause damage to the surface of the object broken, cutting small and smooth, is a professional and DIY craft enthusiasts must-have tool Recommended Machine-----5/8''-11 Thread Angle Grinder. Recommended speed 16000RPM, maximum speed 27000RPM