Designed specifically for the Marine Industry, the Model 3806 Marine Rasper makes short work when fairing hulls and plugs. The 3806 strips bottom paint leaving a smooth flat surface. Use the 3806 with 40-80 sandpaper for rapid material removal or attach a piece of 1500-2500 sandpaper on the 8 X 18 base for the ultimate gel coat or polyurethane finish.