ITEM NAME:2 Tongue and Groove Router Bit -8mm 5/16" Shank, 3 Teeth Carbide Cutters Description: - Cut perfectly fitted tongue and groove joints ideal for wood flooring, wainscot paneling and shaker style panel doors. Set includes separate tongue and groove bits eliminating reassembly for each cut. - C3 industrial quality micro-grain tungsten car.Cut perfectly fitted tongue and groove joints ideal for wood flooring, wainscot paneling and shaker style panel doors. Set includes separate tongue and groove bits eliminating reassembly for each cut.