For use with six 10-32 x 2.5" (9mm) or 2.75" (15mm) machine screws + hex nuts.
Tested with 90mm Flywheels, 90mm clones, and 83mm clones. Most of the clones will need the "thick" version of the pulley and retainer models, whereas the genuine flywheels require the standard version of the models.
Use at your own risk.
11/15/14: Added 15mm version of the pulley, by request. Should work with 2.75" screws.
11/27/14: Added 9mm widths for the newer "thick" hubbed clones. Each spoke is roughly 1/4" wide, instead of just over 1/8" on the original flywheels and older clones.
11/12/15: Added 15mm version for thick-hubbed clones.