This is GRAFF Master 300x10x3.2×25.4/20 mm diamond cutting blade for concrete and stone. 10 mm high segments are attached to the blade body by hot pressing, which provides durable connection for even longer service life of the blade. It is recommended to use the blade with coolant, but dry cutting is also acceptable if a maximum rotation speed does not exceed 6.600 rpm. Cutting thickness is 3.2 mm. The blade has 25.4/20 mm mounting bore and is intended for angle grinders.