fast cutting,long time using,no chip specification is custom high-end corundum for coating good price with better quality Electroplated Diamond Saw Blade1. For glass, marble cutting2. Diameter from 105mm to 230mm3. Hole size: 20, 22.23, 25.4, M144. Grit: 40/45, 45/50, 50/60. Outer Diameter 4"105mm4.5"115mm5"125mm6"150mm7"180mm8"200mm9"230mm Diamond Saw Blade with Two side triangle spot