3/8" Polylock Rocker Arm Nut Set (Suits: Aluminum Rockers) wall thickness and are formed

wall thickness and are formed from 4130 chromoly steel

improved meshing to reduce tooth jump

They feature larger radius stud fillets for extra strength

This one-piece billet steel flexplate offers the strongest gear teeth

Speedmaster piston oil ring spacers are manufactured from spring steel and install against the bottom sill of the oil ring groove

3/8" Polylock Rocker Arm Nut Set (Suits: Aluminum Rockers) wall thickness and are formedSpeedmaster rocker arm adjusting nuts are high quality polylocks designed for full roller rocker arms. Made from heat treated, premium grade 4140 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. Precision CNC machined threads to ensure optimum seat pressure, flush machined set screws for proper contact on the studs, and, best of all, they don't require any special tools for installation. They're