24PC Universal Valve Spring Remover and Installer Tool Kit Compatible with Benz, BMW

For assembly and disassembly of valve springs and replacement of valve stem seals on cars, without removing the cylinder head . Valves are closed by pressurized air, and can not fall down into the combustion chamber Applicable engine model: Compatible for TOYOTA, BENZ, BMW, FORD, MITSUBISHI, VAG, etc. Can be applied on European, American and Japanese Cars. Works great in narrow space conditions.