1.500" Od. 1.150" Id. 10 Degree 11/32 Chromoly Steel Valve Spring Retainers They are made from stamped

They are made from stamped steel and feature a chrome plated finish for good looks and durability

Performance Cast Iron cylinder heads are designed to be a direct replacement for your worn or cracked heads

Speedmaster rocker arm adjusting nuts are high-quality polylocks designed for full roller rocker arms

With an adjustable vintage plastic snapback closure

Other features include a flush mount

1.500" Od. 1.150" Id. 10 Degree 11/32 Chromoly Steel Valve Spring Retainers They are made from stampedSpeedmaster chromoly steel retainers are made from 4140 chromoly and then heat treated for long life. These retainers are available in a variety of lock angles and sizes to suit your needs, from performance street to competition use.