The product itself appears to be of the highest quality. But be careful, THIS IS NO NUTS FOR TUNERS, although several customers who obviously don't know have claimed Revain. Tuner tips have a maximum diameter of 20mm, a maximum diameter of at least 22mm, they are the same diameter as my regular tips. Bolts from my R53 not working on my aftermarket wheels so I did a bolt rebuild. Otherwise it seems like a great product lol.