Originally Posted by
Bezalel
Are you sure you had the BBT-22 and not the BBT-2? The BBT-2 was designed to work with a square taper cartridge. When splined cartridges (ISIS and Hollowtech) were introduced they used the same 20-tooth spline pattern but since they had wider spindles the BBT-2 couldn't fit over them. In responce Park made the BBT-22 and discontinued the BBT-2.
You are correct, I had the BBT-2, but there was a change in the later version of the BBT-2 to accommodate the larger diameter spindles. There was a "running change". I actually found the email from April 2007 from Park Tool:
"The newer BBT-2 are deeper and have a bigger inside diameter, it was running change. The BBT-22 also would work."