Designed to keep the rocker arms positively locked for precise and critical valve train adjustments. Manufactured from quality grade steel, then heat-treated for extra strength and plated with a durable finish. Kits include 16 rocker arm nuts with socket head set screws and one hex key wrench.

Features

(16) Rocker Arm Nuts w/ Locks - 7/16"-20 Threads

Includes Locks and Hex Wrench

9/16" Wrench Size & 7/32" Hex on Lock

Overall Length of Nuts: .875"

Shank O.D. .544"

For Use with Aluminum Rocker Arms

Fits Big Block Chevy and Pontiac V8