10" x 6" x 4", triple edge drywall knife, heavy duty plastic with beveled straight edges, combination tool for applying drywall joint compound: 4" edge used for first coat, 6" edge used for second coat, 10" edge used for top coat, eliminates the need to buy all 3 knives 4", 6", 8", but a little more difficult to use, excellent tool for smoothing wallpaper when applying.