CNC Spoilboard Surfacing Router Bits, 1/4 inch Shank 1 inch Cutting Diameter, Slab Flattening Router Bit Planing Bit Wood Planing Bit Dado Planer Bit by BINSTAK (Carbide) - - Amazon.com
Straight Cut Router Bits, Newdeli 3pcs 1/2 Shank Double Flute Straight Router Bit Set Straight Dado Wood Milling Cutter with 1/4", 3/8", 1/2" (Dia.) - - Amazon.com