This is a camera, what should I praise? But it keeps the air in and solves the car's tire problem. Bike tube "patch kits" don't work because these days they contain rubber glue instead of the old school which contained the "carcinogenic smelly chemical methylbutyl" used to glue the patch to the tube, so you can buy that. It's a great value: 2 packs for $14.99. If you're political about your purchases like me, you should know that this is MADE IN CHINA. I don't think you could find an alternative made in a country that doesn't have toilets.