Amana - RC-2257 2 1/2" Surfacing Insert Cutter Router BitInsert carbide spoilboard surfacing & rabbeting router bits great for cutting large surface areas and surface planing. Cutter body, use HMA 12 Blades Cut Diameter: 2 1 2" Shank: 1 2" Cut Length: 1 2" Overall Length: 2 1 2" Flute Type: Surfacing Perfect for: Resurfacing spoilboards using CNC Planing large glued up panels using CNC Rabbeting or slotting Featuring: 4 sided solid carbide insert knives Exclusive carbide grade for highest quality of cut