Quick release wheel group, barrel axle wheel group are unified
The disc lock cover of the center lock wheel group, regardless of brand, front and rear 12 15 20 MM cylindrical axle wheel group or quick release wheel group, can use this lock cover, and center lock wheels can be used.
International standard lock cover
Except the center lock hub for fulcrum wheelset is not available, everything else is fine.
Note:
Both the front and rear hub wheelset use this lock cover, and the wheelset with the central locking disc can be used.