Free Shipping from Contractors Store.. Floor Machine Hardwood 6 Blade Replacement Kit 50 grit. Estimated Blade Life 50 Grit Hardwood. Up to 3000 Sq. Ft. The Diamabrush Hardwood Removal Tool is the first step in the wood refinishing process. The tool is designed to remove polyurethane's, aluminum-oxide, carpet adhesives other hard to remove coatings from hardwood floors. The Diamond cutting surface remains free of melted or gummed up coatings maintains sharp cutting points throughout the life of the tool. Unlike sandpaper, the Diamabrush Hardwood tool very easily effectively removes saving hardwood flooring contractors and do-it-yourselfers time money.