Fed up with gaps and sloppy joints when you rout grooves and dadoes for plywood joints? Our Plywood Goove Bits match the true thickness of plywood, producing tight, accurate joints. Use our 23/32" bit for 3/4" plywood, 31/64" bit for 1/2" plywood and our 15/64" for 1/4" ply. All bits have 1/2" shaft.D = Diameter; CD = Cutting Depth; CL = Cutting Length; R = Radius; SH = Shank Diameter; OL = Overall Length.Note: Products labeled 'Ships Direct from Manufacturer' are shipped directly from the manufacturer, whose warranty supercedes any offered by Woodcraft. In-stock product will ship within 5 business days. All returns after 30 days are subject to a 25% restocking fee. For details, click on the 'Ships Direct From Manufacturer' link below.