I only bought it because of the many reviews and never looked at bad reviews. When I got home from work, I noticed the screw and pulled out the kit to do the repair. When it came time to plug the tire, the tool came loose almost immediately. The tool also comes with an Alanian tool to solve this problem: the sliding part is no longer flat and can no longer prevent the part from rotating, making it virtually useless. I couldn't buy anything cheaper and would have done better.