DescriptionSpecificationsDescription1/4-28 Internal 28 TPI 1/4" Shank 3-Flute RH Solid Carbide Helical Flute Thread Mill TiAlN Finish, 0.197" Cut Diam, 0.57" LOC, 2-1/2" OALSpecificationsManufacturer Item No.5604984Manufacturer NameIscar