Cutting, polishing, and smoothing out metal is all done with a grinder. As such the only difference between them in terms of what task you are performing is the kind of wheel you attach to the end of your grinder. In the case of a grinding wheel we only stock the best and as such carrying the Norton and Walter brands. However, if a new brand comes out that is superior we shall stock that as well. So check back periodically to make sure your equipment is the very best there is. Now when it comes to the wheels we currently stock; the Norton grinding wheels are made of a sturdy aluminum oxide that has an abrasive surface ideally suited for small shops with various metalworking applications needing or be done. While the Walter grinding wheels feature abrasive grains within the wheel itself that help to increase the wheels hardness. Making it ideally to be used on various metal grinding applications, most notably, grinding welds down fast and effortlessly for a seamless end result.