Bissonette Edgers have just the right curvature to get at those hard to reach edges. All of our edgers have been made of heat treated steel and hand sharpened for a nice clean end. We have researched and used these tools in our own shop and now believe we have just the right curvature on each blade. Sizes are from 0 to 5 with 0 being the smallest. Our edgers are finished with a nice brass ferrule and nicely polished handle. Sold as set or individually.