First of all, I gave this unit 3 stars only because it’s to light weight for my road application. Some of the portions of my road are so compacted, they are like sidewalks. I set the sacrificing teeth to less than half an inch, and within my 3rd of a mile road, I broke 3 teeth. I ended up breaking 10 for the afternoon of grading. The teeth break where the threaded portion begins. I purchased extras which was a good thing. Once the road is in better shape, it wont be as hard on the grader. Conclusion, I should’ve purchased the rascal.