Woodline USA WL-2038 3-Piece 1/2-Inch Shank Offset Tongue and Groove Router Bit Set 3-piece 1/2-inch shank offset tongue and groove router bit set perfect for cabinetry work and furniture applications Produces 1/4-by-1/4-inch tongue and groove joints; increases flexibility with the ability to offset joint complex Euro anti-kickback design; 1/2-inch shank 3-piece set; industrial carbide-tipped bits Backed by lifetime warranty