Features: 36050 Valve Keeper Remover and Installer Designed to easily and simply remove and install the valve keepers, can be used on most overhead valve engines with valve stems from 4.5 to 7.5mm and 5/16" to 3/8". 19700 Valve Holder used when valve springs or valve stem seals are replaced, for use with a air compressor to help prevent the valve from falling into the combustion chamber. Fit for both 14mm and 18mm threads. HW0107 Valve Stem Seal Pliers Used to remove valve stern seals on the overhead camshaft engines, fits for most cars in the market. Quality .