Features and Benefits: Designed to remove and install frost plugs used in liquid-cooled gas and disel engines found in automobiles, trucks, SUVs, agricultural equipment and construction equipmentSimply use a hammer with the driver and appropriate disc to install frost plugs ranging from 1″ to 2-3/8″ in diameterSet includes: 4603-1 Installer handle (18″ long); 4604-2 frost plug remover; 4604-3 frost plug disc set ( 7 each plus 1 retaining nut). Designed to remove and install frost plugs used in liquid-cooled gas and diesel engines found in automobiles, trucks, SUVs, agricultural equipment, and construction equipment.Simply use a hammer with the driver and appropriate disc to install frost plugs ranging from 1 in.; to 2-3/8 in.; in diameter.Set contains: No. 4603-1 Installer Handle (18 in.; lg.); No. 4604-2 Frost Plug Remover; No. 4604-3 Frost Plug Disc Set (7 ea., plus 1 retaining nut).