Conversion studs to allow your car to use studs and wheel nuts, rather than bolts. These are suitable for BMWs and many other manufacturers who use M12x1.5 wheel bolts.
These screw into your hub with an allen drive, leaving a 50mm M12x1.5 stud to bolt the wheels to.
Essential in saving time for drift/track use when regularly removing wheels.
Priced individually, so for example purchase 20 to convert a BMW E46.
Please note, thread lock MUST be used when fitting and open ended wheel nuts are also needed.
These fit all older BMWs, but it seems like the newer models such as the F10 have changed from an M12 to an M14 threaded hole for their wheelnuts, so these won't fit models with M14 holes