"Bilz" style, ANSI, rigid, tap, collet set.  18pc.  includes collet #'s: 6P, 08P, 10P, 12P, 05P, 025P- (2pc), 031P, 037P- -(2pc), 043P, 050P, 056P, 062P, 068P, 075P, 081P, 087P.