The Performance Tool Frost Plug Installer Set is an essential tool for removing and installing frost plugs in liquid-cooled gas and diesel engines. This set is easy to use with the appropriate installation disc and hammer the driver to install the frost plugs, making it simple for both professionals and DIYers. With 7 frost plug discs ranging from 1 to 2-3/8 inches in diameter, this set can handle a variety of frost plugs in different sizes. Made from forged high carbon steel and plated to resist corrosion, this set is durable and can withstand tough working conditions. The set comes with a blow molded case for easy and convenient storage, making it easy to keep everything organized and in one place.