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.ca: Tools & Home Improvement
Amana D 1-1/2 Inch Surfacing Router Bit with Carbide Inserts RC-22**
CNC Spoilboard Surfacing Router Bit 1/2 In Shank 4 Flute Slab Flattening Route | eBay
CNC Spoilboard Surfacing Router Bit 1/2" Shank 1-1/2” (Dia.) Wood Planing Bit | eBay