Edelbrock Part # 9615 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. 32 Qty 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: Yes Quantity: Sold as a set of 32.