Up for sale is a set of 4 genuine OEM BMW wheel locks (M14x1.25). I purchased these thinking they'd fit my new wheels but unfortunately they don't due to the size of the lock key. My loss is your gain!
I'm willing to sell for $40 plus shipping.
They sell for over $60 not including shipping at some reputable outfits.
http://www.ecstuning.com/BMW-E70-X5_...851/ES1894227/