Valve Spring Height Micrometer PR66903 Product:Height Range 1.400" - 1.800" The Pro-Flo XT LS1 EFI

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Valve Spring Height Micrometer PR66903 Product:Height Range 1.400" - 1.800" The Pro-Flo XT LS1 EFIValve Spring Height MicrometerHeight Range 1. 400" 1. 800" PR66903 66903 Measure installed valve spring height conveniently and accurately. Simply install the height micrometer instead of a valve spring, and then rotate the clearly engraved dial to expand the tool to seat the valve, locks and retainer. Fits most 4 and 6 cylinder engines.