Review on Powerful Car Dent Puller Kit - Easily Remove Car Dents & Repair with the Auto Paintless Dent Remover Tool - Great for Glass, Screen, and Moving Objects by Kenneth Rich

I had a small dent about two inches wide and a smaller tool pushed it out. Luckily (for me) I can't test the large tool on a car, but it sticks easily to my countertop so I can assume it will work just as well as a smaller tool. The suction cup on the small tool is about 2.5 inches. inches wide and I've used it successfully on a dent about two inches in diameter. A large tool's suction cup is about 4.5 inches wide, and I think it's worth trying dents that are about 6 inches wide or less. Anything larger can be dented without home repairs. I'm very happy with this set - I think it will be great to have on hand.