Have not used this product but it looks & reads alright for flat tire protection!A little off topic, but has anybody used this product? I'm curious about it. If the reviews are correct, it would be a combination of a flat tire protection system (sic) and the equivalent of a Centramatic Balancer, at a lot less price. The product description and reviews seem to indicate it does the same thing as a Centramatic Balancer durng the life of the tire. And it supposedly doesn't interfere with any TPMS hardware or ABS system. Used by many commercial and government agencies, including Law Enforcement and the military.