DEWALT DW433KT 8 Amp 3-Inch by 21-Inch Variable Speed Belt Sander Kit with Dust Canister, Case, and Inversion/Sanding Frame Powerful 8 Amp motor aggressively removes material in a variety of applications All-metal housing increases durability during a drop Three wheel design delivers lowest center of gravity and longest 3-inch by 21-inch platen available Variable speed dial allows user to vary speed for specific materials and various applications (100-350 spm) Innovative dust collection unit is 20 percent more efficient than conventional dust bags Dust collection shut-off valve eliminates dust stream toward user when collector is not in use