i think these are 30-spline axles,
the BOP style 12-bolts and 10-bolt cover axles did not have C-clips from the factory...:noway:
to add the disc brake kit/bracket you will need something to work with the BOP style axle ends...
i think these are 30-spline axles,BOP 12 BOLT. Has a 12 bolt pattern cover and 10 bolt ring gear.