Best used for: Laminate or veneer-finish plunging and dadoing. Cutting Diameter: 1/4 in. Cutting Height: 3/4 in. Shank Diameter: 1/4 in. Overall Length: 2-1/2 in. Flutes: 3 Down cut endmills shear in a downward direction causing the uppermost layer of the material to be pressed down against the material just below it. This motion leaves a perfectly clean top surface edge. A concentration of wood chips in the work path will occur. Hose away excess wood chips to prevent bit breakage. Down cut CNC end mills are great for dado, pocket and inlay work as well as the final pass on most projects. These bits are especially useful when routing material such as melamine and plywood. Down cut spiral bits are designed to produce perfectly clean edges on the top face of the work piece but since the bits geometry causes the wood chips to travel in a downward direction, which will cause the tool path to be obstructed, it should only be used in applications where the desired finish is required.