Precision Twist Drill Precision Twist Drill End Mill, Extra Length Single End Square End, Series: E6304V 003174, 1 in Cutter Dia, 6 in Overall Length, 3 in Maximum Depth of Cut, 4 Flutes, Spiral Flute, 1 in Shank Dia, Right Hand Cutting, 30 deg Helix Angle, Straight Shank, HM, TiAIN Coated.