If you want Bosch grinding wheels of authentic quality, then check these products. You will find that we are offering these grinding wheels in two options - 4 mm and 6 mm. These products are categorized under industrial tools and instruments. These are made of metals and are provided in different colors. The wheels do come with warranty. The 4mm version of Bosch grinding wheels has a maximum RPM of 15300. It is important to note that the Bosch grinding wheels cannot be used to remove the wall paint.