Edelbrock part #9646 Pushrods are designed for small-block Chevy V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precise forme Product Features:7.25 in. Length0.312 in. Diameter4130 Chromoly Steel MaterialBlack Oxide FinishMade In The USA