Scroll through the "Key" dropdown menu above to see how the instrument looks in each key. Each crook set includes one vented yard (unless otherwise indicated) and is shipped in a labeled, color-coded storage bag.
G*, F, E (F@A=415), Eb, D (Eb@A=415)
Db (D@A=415), C, B (C@A=415), Bb*, A*
*NOTE: The keys of G, Bb, and A do not come with vented yards. The keys of Bb and A use a whole-step coupler in conjunction with the C and B crook sets (respectively).
Bb = C crook set + coupler
A = B crook set + coupler