19700 Air Operated Valve Holder + HW0107 Valve Stem Seal Pliers Remover Tool Set Features: 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. .
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