Excellent for working composition board and melamine, this bit cuts with a shearing action, slicing very slightly downward to prevent chipping & tearing of the surface Veneer or coating. It Augers chips away from the router. Designed primarily for production applications where the router is above the work, #45426-PS, diameter (D): 1/2, cutting Height (B): 2, shank (D): 1/2, overall length (L): 4-1/4, flutes: 245426-ps carbide Tipped 3 deg production Shear straight plunge 1/2 dia x 2 x 1/2 inch Shank