This Gamblin Ground and Gesso Blade is the right tool for the job. If you prime canvases and panels with gesso or Oil Ground, you know how time-consuming it is to get a thin, even coat. Get a perfect, even application from edge to edge in a fraction of the time, with less mess and no waste using Gamblin Gesso and Ground Blades. Move, mix, and scoop product cleanly. Also use to apply panel sealer, size canvas and linen with Gamblin PVA Size, create large color washes, tone painting surfaces, screen print, and create texture or smooth, encaustic-like surfaces using Cold Wax Medium and oil colors. You also know what a pain it is to clean brushes afterward. And how wasteful single-use paint rollers are. With the Gamblin Ground and Gesso Blade, you get a perfect, even application from edge-to-edge in a fraction of the time, with less mess and no waste. Wipe clean after use with Gamsol, soap and water, or safflower oil and reuse your Ground and Gesso Blade over and over. Best of all, it is the first and only artist's tool made from 100% recycled material. And they are made by a small, family-owned manufacturer in the United States. Small blade measures 4 inches wide by 2.75 inches tall. Large Blade measures 5 inches wide by 3 inches tall.