Pipe Break is an aersol spray compound specifically designed to penetrate between two pieces of rusted metal to help remove the fastener without breaking it or having to cut it off. It works because it has very low surface tension and is able to get into the very tightest of places. The can is set up for convenient application of the product where you need it. The straw is attached to the can for precise application. Of course, you can also use the standard wide spray to flood an area with the material. We have tried to make it as easy as possible to get the material where it has to go.