Made with a heavy duty combination paper to provide maximum durability to withstand the stresses that floor sanders will put on the sandpaper. L X 12 in. W 60 Grit Silicon Carbide Floor Sanding Sheet Gator has precut sheets to fit the most popular floor sanding machines at your local rental stores and has the entire range of grits to remove your old finishes and to smooth the surface before you apply the new finish and top coats..