22 piece BSPF HSS Threading Set in purpose designed case. Contents: HSS Taps - ISO 529: HSSGT Straight Flute Taper Tap: 1/8" x 28 BSPF, ¼" x 19 BSPF, 3/8" x 19 BSPF, ½" x 14 BSPF. HSSGT Straight Flute Plug Tap: 1/8" x 28 BSPF, ¼" x 19 BSPF, 3/8" x 19 BSPF, ½" x 14 BSPF. HSSGT Straight Flute Second Tap: ¾" x 14 BSPF. HSS Dies -BS 1127: 1 5/16" Outside Diameter HSS Die: 1/8" x 28 BSPF, ¼" x 19 BSPF, 3/8" x 19 BSPF HSS Die Nuts - BS 1127: HSS Hexagon Die Nut: ½" x 14 BSPF, ¾" x 14 BSPF. HSS Drills -BS328/DIN 338N: HSS Straight Shank Jobber Drill: 8.8mm, 11.8mm. HSS ½" Parallel Shank Drill: 15.25mm, 19 mm, 24.5mm. Holders: 1 5/16" Outside Diameter Diestock. Traditional Tap Wrench: 1/16"- ¼", ¼"- ¾".