Proform 66902 1.60-2.10 Inch Range in 0.005 Increments
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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 V8 engines.
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Please review Specifications and the detailed fitment table for notes and exceptions.