I have three of these. I started using one with a flip disk on it. Then my Dewalt grinder died and I replaced it with another one of these Makitas. I bought a Harbor Freight grinder to save some money and put a spoke wheel on it and it took a week. (Easier to manufacture if you don't have to change wheels every time and only have one grinder for the task - cutting/grinding/serrated washer/wire wheel. Went through another burnt HF grinder and got a Milwaukee. This one died and I have just bought another makita and it might be the last grinder i ever have to buy as other makitas have outlived several of these other brands by many years they still seem to be the best tools since i started 30 years ago to use them.