Carbide End Mill, List Number E5024, Type General Purpose, End Style Square, Double End, Diameter 1/2 In, Shank Dia. 1/2 In, Length of Cut 1 In, Overall Length 4 In, Number of Flutes 4, Center Cutting Type, Cutting Direction Right Hand, Helix Angle 30 Degree, Finish TiN, For Mild Steels, Soft to Medium-Hard Steels, Stainless Steels and Non-Ferrous Metals Carbide Double End Mills, Square End30 helix angle Center cutting