COMP Cams 7866-12 High Energy 5/16" Diameter 10.136" Length Pushrod for Ford 240-300 6-Cylinder, (Set of 12) 5/16 inch diameter; 10.136 inch length High Energy Pushrod for Ford 240-300 6-Cylinder Best choice when building street rods, RVs or daily drivers Meet or exceed all OE pushrod specifications Mate perfectly with High Energy and Magnum Rockers