Carbide End Mill, Grade C2 Micro Grain, List Number 204, General Purpose, End Style Corner Radius, End Single End, Dimension Type Fractional Inch, Diameter 1/4 In., Shank Dia. 1/4 In., Length of Cut 3/4 In., Overall Length 2-1/2 In., Number of Flutes 2, Center Cutting Type, Cutting Direction Right Hand, Helix Angle 30 Degrees , Corner Radius .030 In., Finish Uncoated