After that I can't use the Forstner bits anymore. It ruined me. On plywood it leaves absolutely no gaps, either before or after the hole. nobody! It fits the measurements exactly and easily cuts into the wood. The chips move up like they should and never get stuck down like many cheap bits do. Undoubtedly, this upgrade costs extra money. In the future I will be buying these to replace all of my Forstner bits. The hole is so smooth I didn't have to sand anything at all, but I sanded a bit with 220 grit sandpaper for fear of cutting myself on the edge it left!