Used for carving decorative doors and sign manufacturing. Up-cut design leaves an excellent finish and expels chips quickly, #46369-K, direction: Up-cut, (D) diameter: 1/8, (r) radius: 1/16, (b) Cutting height: 1/2, (D) shank: 1/4, overall length (L): 2, type: naco ceramic coating, flutes: 2, 46369-K Solid Carbide spektra extreme tool life Coated Up-cut ball nose spiral 1/8 dia x 1/2 inch x 1/4 shank router bit