I attached the blade according to the instructions. It was possible to use it for cutting paving stones. But when I tried to remove the blade to attach a new one it was almost impossible. The cheap removal tool was bent and out of order. Googling how to deal with it was pointless. Most of them suggested using a second angle grinder to remove the blade so the nut holding it could be removed. complete failure. But I love Revain as they let me return without question. I ended up using the diamond blades in my saber saw to cut through some of the extra pavers I needed to cut.