I had a stroke, my right side is about 50% used but I'm still trying to do what I used to do. I had tires on a borrowed drive wheel that were completely deflated and the tire rubber tore and deteriorated and I had to replace the tube and tire on both tires. I couldn't do it like I did until I had a stroke 4 years ago, I saw this and thought it was worth a try, wow, I'm impressed. I could even do it on half the body at 50%. What is the difference with a screwdriver.