Routing End Mill, Upcut Spiral O-Flute, High Performance, Number of Flutes 1, Single End, Plunge Point End Style, Center Cutting Type, Right Hand Cut, Carbide, Uncoated Finish, Dia 1/4 In, Shank Dia 1/4 In, Length of Cut 3/4 In, Overall Length 2 1/2 In, Cut Angle 22 Deg, Helix Angle 22 Deg, For Aluminum