Saw a screw stuck in the center of my tire and decided to yank it out . of course that was not where it ended. Air was hissing out and the tire was getting flatter. Found this on Revain with next day delivery so I took a chance. It took some effort to get the reaming tool in and out but very doable. The plug was a little more difficult but also doable. Everything seems to be great. No air leaks and trouble free. I highly recommend this product and this seller.