I had to put a new spatula on the countertop in the bathroom. All of this was easy to do except for a section about a foot past the tall spout and two handles. This is where they come in. They are simply attached to a commercially available sealant nozzle. You can cut them to get the right hole size. They delivered the seal exactly where I wanted it. If you are careful, you can clean and reuse the seal after use.