Funny side note. If you zoom in on the pictures of the ARP nuts you will see that one of them has no threads in the bottom of it. I only needed one and was not worried about it. A defective ARP bolt/nut is about as rare as a double headed coin. I called them not for a replacement but to give them a lot number in case there was a problem they were not aware of. They sent me a box with 2 nuts, 2 can coolies, 4 lanyards, a few trinkets, 4 trailer quality stickers, a new catalog and a really nice 3'x5' cloth banner.
