Has been caulking my flats for about 25 years. If you know how to do it and the hole isn't in the side panel, the connection will be easier and faster than replacing that useless "donut" that our cars and even SUVs have these days! The kit just arrived and after looking at it I can say it's well stocked. The preparation tool and the insertion tool are made of heavy-duty metal! No doubt some mechanic designed this kit. It has EVERYTHING you need plus a few things to get you going. Of course you need an air pump! Also keep a small bottle of water/soap solution handy so you can probably find the leak first and then check that the new plug is still holding!