Proform Tall Valve Spring Height Micrometer; Range: 1.600" - 2.100" (For Most V8 Engines) 32022BK They are machined out of

They are machined out of 6061-T6 aluminum and have a 3/8"-16 stud for your shift knob

providing the most accurate reading in an analog dial

(4) Vacuum Ports " (1) Each 1/4 NPT & 3/8 NPT & (2) 1/8 NPT w/ Indirect Baffled Signal

QA and Certifications: Hellwig is ISO 9001:2015 and ISO 14001:2015 certified

a sealed ball bearing and long sintered bushing guide a 0

Proform Tall Valve Spring Height Micrometer; Range: 1.600" - 2.100" (For Most V8 Engines) 32022BK They are machined out ofMeasure 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. PROFORM invites racers to experience the strength, innovation, and power behind the PROFORM brand. PROFORM Parts (Specialty Auto Parts U. S. A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering