Edelbrock Part # 9612 Valve Stem Locks are 7 Degree, hardened Steel with a 11/32” stem, standard height, machined and hardened replacement valve locks. Only machined and hardened valve locks are acceptable in Edelbrock applications. designed for use with Edelbrock retainers. Valve Stem Diameter (in): 0.372 in. Valve Stem Diameter (mm): 9.45mm 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.