Looking to find one anti theft valve stem cap to replace one that was lost.
Mine look like these, except mine don't use set screws to hold them in place. Mine uses a specialized sleeve that slips under it to remove them once they are screwed on.

http://www.ebay.com/itm/FREE-SHIPPING-4-PC...=item2a143dec18

For the price of only $3.50 and free shipping, I'd just buy another set and have some spares

Thanks for posting though, I think I'll buy a set or two from the guy myself