CMT 855.508.11 Drawer Lock Bit with 1-Inch Diameter with  1/2-Inch Shank 3/8 to 5/8-Inch Max Board Thickness, 1/2-Inch Cutting Length, 2-25/64"-Inch Overall Length 2 Hi-Density carbide-tipped cutting edges for long-lasting performance on wood Anti-kickback design to control the depth of cut and work safely Make strong, perfectly fitting joints quickly and easily For making fine drawer fronts easily