go on
www.cleanyourcar.com - they do a 3 pack of clay bars in a box - all different grades. Start with the finest, so as not to cause to much damage if you do it wrong (not enough lube for instance) as this will cause less holograms. Once you've perfected it - go over again with medium bar. Its pretty easy once you get going - just remember - you can never have enough lube! ha ha