Kodiak Cutting ToolsKCT203630 USA Made Hand Threading Tap Set, Includes Taper, Plug and Bottom Taps, H3 Limit, Ground Threads, High Speed Steel, 4 Flute, 3/8-16 Size (Pack of 3)

Kodiak Cutting Tools KCT203630 USA Made Hand Threading Tap Set, Includes Taper, Plug and Bottom Taps, H3 Limit, Ground Threads, High Speed Steel, 4 Flute, 3/8-16 Size (Pack of 3)

Drill America - DWT57192 7/16"-14 High Speed Steel 3 Flute Spiral Point Tap, DWT Series