7 Degree, 1-Groove, 11/32 in. Valve Stem, Valve Stem Diameter (in): 0.342 in. Valve Stem Diameter (mm): 8.67mm Lock Style: 7 degree Lock Groove Quantity: 1-groove Lock Material: Hardened steel Manufacturing Process: Machined Recessed for Lash Cap: No Quantity: Sold as a set of 32. Notes: Includes 16 Pairs. 32 pieces, enough to do 16 valves. CTS race locks are designed for performance engines using 7 degree valve locks. They are manufactured from machined steel and offer excellent valve spring location, so it is not necessary to change to a 10 degree retainer. Whether you're rebuilding a race engine or changing to valve springs that have more seat pressure, these CTS Race valve locks will provide the reliability that you've been looking for. Our Super Locks “Look-A-Like” Keepers will not break.