Amana Tool SC450 2-PC Carbide Tipped 3-Wing Stile & Rail Flooring w/Nail Slot 3-1/4 D x 7/8 CH x 1/8 x 1/16 R x 1/2 & 3/4 Bore Shaper Cutter Set for 5/8 to 3/4 Material Carbide Tipped