wheel nuts - thread problems

[Scooby P1]

hi all

I know some people have changed the colour of the hexagonal wheel nuts themselves, but i went to a USA company and bought a silver set of these: http://www.ebay.co.uk/itm/TSW-Custom-Wheel-Hex-Nut...

problem is, they dont fit. The thread is immediately wrong and does not get any further than half a turn. It is clear from looking the thread is too wide, Noble ones are much tighter / thinner.

Anyone know how to tell which ones Noble nuts are? The guy is not keen to take them back for the £50 i paid for them to be sent over from the US!