Swedged End Ford 351M/400 5/16 8.700 .080 Wall Pushrod Kit Engineered for maximum strength and durability. Produced from seamless SAE 4130 chrome moly aircraft tubing. Each tube is case hardened to Rc 60. Pushrods are mirror polished to eliminate the possibility of stress fractures, and finished in black oxide. Strong, but light, well suited for roller applications. Laser etched with size and part number for easy identification.