Monster Tool Company #55 (0.0520) Straight Flute Carbide Drill AlTiN, Diameter: 55, Number of Flutes: 2, Single End, Right Hand Cut, Included Angle: 140-Degree, Overall Length: 1-1/2, Shank Diameter: 0.0520, Application: Capable of producing reamer type finishes in work hardened and abrasive materials. Designed for: chrome alloys, heat alloys, nickel alloys, titanium alloys, steel and stainless steel weldments. AlTiN, MPN: 68979, PKG QTY: 1 PC