Diamond Blades by Star , designed for cutting through concrete. These blades are long lasting and fast cutting. They are available in the following diameters and bore sizes:m 300 mm/20 mm 350 mm/25.4 mm 400 mm/25.4 mm 450 mm/25.4 mm 500 mm/25.4 mm Please note there may be a few days lead time for this product
