INTERNALS: 4 sealed bearings
USES: On standard Profile or Madera cassette hubs with use of 12T - 18T Profile cogs
HUB FIT: Standard Profile or Madera cassette hubs only (not Elite hubs)
CHAIN FIT: 3/32" recommended (1/8" chains will work as well)
Cogs, Pawls, and Springs sold separately. This driver does not come with a lock ring.
MATERIAL: Heat-treated chromoly, Machined Titanium or CNC Machined Aluminum