For when an electroplated diamond blade just isn't man enough in abrasive materials like concrete and sandstone then this is your solution
#30/40 coarse grit and M14 thread fitting.
Ideal for grinding, shaping flush cutting pretty much any stone, concrete or hard material. A great problem solver.
Available in 4"(100mm), 4.5"(115mm) & 5"(125mm) can be used on a grinder or variable speed polisher at slower speed to gain more control.