Standard Pack = 1 piece(s). Class of Fit=H3; Coating=Bright; Material=High Speed Steel; Number of Flutes=2; Overall Length=6 IN ; Type=Spiral Point Taps; Size=5/16 IN -18 IN ; Style=Plug; Thread Type=NC; Size Type=Inch; Shank Diameter=0.24 IN ; Special Feature=Small Shank;