CMT 852.502.11 Dado & Planer Bit, 1/2-Inch Shank, 1-Inch Diameter 3/8-Inch Cutting Length, 2-1/4-Inch Overall Length. Great for mortising in in both natural wood and wood composites. Constructed with thick carbide tips and downward shear angle design for flawless performance. No splintered edges or rough bottoms, fits the most popular mortising jigs. 2 Hi-Density carbide-tipped cutting edges for long-lasting performance on wood.