Lisle 19700 Valve Holder<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Commonly used when valve springs or valve stem seals are replaced</li><li>Comes with two-step fitting for both 14 millimeter and 18 millimeter threads</li><li>Thread fitting to spark plug hole and other end to air supply</li><li>Heavy duty 12" flexible hose allows easy access to spark plug hole and air supply</li><li>Air pressure helps prevent the valve from falling into the combustion chamber</li></ul></div><img src="http://ecx.images-amazon.com/images/I/315k%2Bdx1hQL.jpg" noproxy>