This is a brand new tuner wheel bolt.
These bolts are suitable for after-market alloy wheels where the bolt holes are too small to fit a regular socket. The internal drive of these bolts allows you to tighten up the bolt with the special key provided from the inside, rather than having to place a socket around the outside of the bolt.
Whether your wheels require tuner bolts depends on the manufacturer and is something you must check before purchase. It is important you get this correct to ensure that your car is safe. We would like to point out that these bolts can not be used on many standard wheels, and should not be purchased unless they are specifically required.
If it's just a straight swap to replace the rusty ones you have, the best thing to do it to remove one bolt, measure with a ruler and compare to the specifications above.
If there is any doubt or you have any questions at all, please give us a call on 01908 316455 and a member of our highly experienced team will be able to direct you straight to what you need.