CMT 855.506.11 V-Tongue & Groove Bit Set, 1/2-Inch Shank, 1-3/4-Inch Diameter, Carbide-Tipped Material Thickness from 3/4 to 1-Inch and 2-63/64-Inch Overall Length Use on router tables only Make beautiful tongue and groove paneling or flooring with an attractive 45 V pattern Bits are carefully matched, so it is easy to change them to make the male and female cuts Non-Stick Orange Shield Coating, Anti-Kickback Design, Equipped with Bearing 2 SinterHip Hi-Density Industrial Chrome Carbide cutting edges for long-lasting performance