stem worked but dont leave them on 90 degree valves motorcycle rear tire just used to check add air may work for you but leaked for me five stars five stars great fit durable long lasting just trying to warn the unsuspecting buyers like myself if i had seen a revue like great quality product so easy to use great item to buy at a good price would highly recommend atwood that is what we replaced and not disappointed replaced my old water heater five stars fit landscape trailer you wont regret this purchase for quality and value a bit of a tight fit i had to