This unique set will produce beautiful tongue and groove paneling or flooring with an attractive 45º “V” pattern. Bits are carefully matched, so it is easy to change them to make the male and female cuts. For the fastest possible production when running large volumes of stock, consider setting up on two separate router tables, with one dedicated to each cutting operation. Bits feature super-strength superior steel bodies, Non-Stick Orange Shield Coating and cutting edges made of SinterHip Hi-Density Industrial Chrome Carbide for a long-lasting performance. Not for use on hand-held router. Use them on router tables only.