pMorse Combined Drill and Countersink, Plain Long Length, Series 5495T, 18 in Drill Size Fraction, 0125 in Drill Size Decimal inch, 4 Point Dia, 516 in Body Dia, 4 in Overall Length, 516 in Shank, 60 deg Point, 60 deg included Angle, Solid Carbide Cutting Edge, Solid Carbide, AlTiN Coated, Applicable Materials Abrasive Materialp.