The Sealey 5 Piece Valve Collet Remover and Installer Set is a comprehensive valve service tool kit designed for engine repair and maintenance work. This versatile set enables mechanics and automotive technicians to quickly remove and install valve collets with the cylinder head either in situ or positioned on the workbench, eliminating the need for complete engine disassembly in many scenarios. The collet removal tools feature integrated magnets that capture the small collets during extraction, preventing loss and simplifying the installation process. Operation is straightforwardsimply push firmly or tap with a hammer to compress the valve spring. This makes the set ideal for replacing broken valve springs or valve stem oil seals without the time-consuming task of removing the cylinder head from the engine block. When working in situ, a suitable adaptor is required to introduce compressed air into the combustion chamber, which holds the valve closed whilst the spring is compressed.