Our Power Driven 97-07 7.3L PowerStroke Stage 2 Pushrods offer incredible value. All rods are 7/16" in diameter. Utilizing 4130/4135 chromoly tubing and proprietary heat-treating techniques, this material achieves an incredible 275,000 psi tensile strength without becoming brittle. The heat-treated tubes have straightness memory with a hardness of 42 to 46 Rockwell.