I had bought a stripper cheaper in a store. I made it, it was very fake. There, it's solid, real. Besides, I had noticed that it was that of my plumber. I have a private use. I am pre-old. I had never used this type of device. so I made mistakes. I had to change a window: it has split in the heat. So attention. To remove the sealant is super fast. It is based on his "ass" (as the bottom of the bottle, sorry ...), which is very convenient. Be careful not to burn yourself with the tip. So, I'll redo all my doors.