Carbide End Mill Grade C2 Micro Grain List Number 206 General Purpose End Style Corner Radius End Single End Dimension Type Fractional Inch Diameter 5/16 In. Shank Dia 5/16 In. Length of Cut 13/16 In. Overall Length 2-1/2 In. Number of Flutes 4 Center Cutting Type Cutting Direction Right Hand Helix Angle 30 Degrees Corner Radius .015 In. Finish Uncoated