YG-1 End Mill, Center Cutting Double End Regular Length, Series: E1053, 1/2 in Diameter Cutter, 4-1/8 in Overall Length, 1 in Length of Cut, 4 Flutes, 1/2 in Shank Diameter, Right Hand Cutting Direction, 30 deg Helix Angle, Flat Shank, 3-1/8 in Shank Length, HSS, Uncoated