To be used only on CNC machines and routers with automatic feeding. Using the highest quality sub-micrograin carbide These bits have a special proprietary edge processing system featuring a super high polished cutting edge with a unique “mirror finish” Resulting In clean cuts, less chance for chip re-welding, a superior surface finish and a longer tool life. Right hand helix right hand cut, #57306, direction: Up-cut, (D) diameter: 10mm, (B) Cutting height: 30mm, (D) shank: 10mm, Overall Length (L): 76mm, flutes: 1, 57306 Metric solid carbide CNC spiral 'o' Single flute, aluminum Cutting 10 DIA x 30 x 10 shank x 76mm long Up-cut router bit