The chain guard ring is fastened centrally in the thread of the crank arm with the supplied screw.
for chainrings up to max. 44 teeth
Chainbrace diameter max. 192 mm
suitable for:
Shimano assemblies from 2003 (42 - 44 teeth)
Saint, Deore XT, Deore LX, Alivio, Altus, Acera, Tourney