This is the absolute best tool to make a great ground connection. Just put in a drill and scrape the hell out of any paineted surface to get a pure metal ground.
its Snap-on part #AC204B
it only like $13
heres the link to it
http://buy.snapon.com/catalog/search.asp?partno=AC204B&search_type=Part&store=snapon-store
its Snap-on part #AC204B
it only like $13
heres the link to it
http://buy.snapon.com/catalog/search.asp?partno=AC204B&search_type=Part&store=snapon-store