The 8G4025.8X4.0W is a Dremec part that is used for general purpose grinding and cutting. It is a disc-shaped, 4" (100 mm) tool featuring a 25 mm width and 8 coarse grain carbide chips bonded to a steel base. This product is meant for heavy-duty cutting and grinding with medium to hard materials. It is ideal for fast stock removal, grooving, and edging of metals, concrete, and stone. The disc is suitable for use in an angle grinder, high-speed cut-off tools, hand-held saws, and other light-duty power tools.