'Thread Mill, Single Profile, Internal or External, #2, Thread Size #2-56-80, Pitch 56 to 80 TPI, End Mill Material Carbide, Flutes 3, Length of Cut 1/8 In., Overall Length 2 In., Polished, Neck Dia. 0.0340 In., Shank Dia. 3/16 In., Thread Type UN, Nomenclature SPTM, For Use With -, Application All Types of Metals, Composites and Tough-to-Machine Materials'