I'll start by saying that this product looks good overall. The lugs are marked 10.9 and match the lug pattern on my car. However, I have chosen not to use them on my car; Suzuki samurai. I found that the bolts on my hubs were not long enough to go deep enough through the gasket to ensure good thread engagement on the nut when installing this product. The bolt on the wheel hub should go through the spacer about 1/4 inch before it touches the tapered portion of the spacer where the nut will sit. My stick bolt threads didn't even go halfway into the nut when I tightened the spacer to the hub. I wasn't comfortable with the lack of engagement, especially since the spacers create extra leverage on your hub. If you have a truck or other vehicle with longer lugs I would recommend this product. If you have a Suzuki Samurai I would skip it.