pMorse Aircraft Drill, 1Stage Type C Heavy Duty Screw Machine, Series 1398, Z Drill Size Letter, 0413 in Drill Size Decimal inch, 338 in Overall Length, 2 in Cutting Depth, Standard Flute, 2 in Flute Length, Straight Shank, 135 deg Point, SelfCenteringSplit Point, Right Hand Cutting, HSS Cutting Edge, HSS, Black Oxidep.