1/4 Shank CNC Spoilboard Surfacing Router Bit Carbide Tipped Tool For Wood.

Cutting edge would improve working efficiency, and baked on heat resistant coating prevents build-up of sawdust, and pitch. Shank: 1/4". No glitches, precise, 3 wings make a fast and clean cut on your project material, great for projects of any level of complexity.

eBay