"9/16"" - 18NF, Carbon Steel, National Fine Thread 1-7/16"" Hexagon Fractional Die, Ideal For Routine Maintenance, Repair Work And For Rethreading Where High Accuracy And Tolerance Thread Is Not Critical,
Recommended For Use With Hexagon Die Stock, Die Can Be Used With A Wrench Or Socket When Space Is Limited , Designed For Hand Threading Work In A Variety Of Materials, Bulk"
