6 bolt Steering wheel hub adapter for MAZDA Miata. Road car hub adapter*. Steering wheel hub adapters are required to install 6 bolt MPI wheels into your MAZDA Miata. Collapsable steering wheel hub, Absorb outstanding impact, Increase safety level in case of collision, 6 bolt pattern, Fits MPI-F-13-A and MPI-DO-14-A. Includes: – 6 cap screw, – Hub adapter cover, – Hub adapter washer for horn button