22 piece BSPF HSS Threading Set in a purpose-designed case. Contents include HSS Taps (Taper, Plug, Second Flute) and HSS Dies (1 5/16" Outside Diameter and Die Nuts) for BSPF threads. Also includes HSS Drills (Straight Shank Jobber and Parallel Shank) and holders: 1 5/16" Outside Diameter Diestock and Traditional Tap Wrench.