I picked one up from sears cause I noticed it was taking a bit longer to sharpen my blades plus the blades would heat up fast. This thing cleaned up the wheel fast and made a huge difference when sharpening my blades. It feels as good as new again. BTW i'm using the Oregon unit from Travis. The dresser cost me $12. Not sure how it compares to other wheel dressers but it sure is better then nothing. If you haven't tried one i'm sure you'll be surprised at what it can do for your grinder.