this smart panel beating kit is designed to bring the panel back to the designed shape ie accident damaged or when you need to weld a new piece of metal to your car van etc the kit consist of three different hammers and four different dollies all the dollies are polished and very smooth as to not cause no markes to your panel if storing this in your garage shed smear the dollies hammers in oil to protect this kit from tarnishing so you get best results every time.