For (Supderduty, 6.0L Diesel) Built for the (03-05) Ford F350... Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. Each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Feature: Rated at 220,000 psi tensile strength .
Gotta love high quality parts for a more than reasonable price. Well packaged to top it off! Highly recommended, save a small fortune by not buying “name” brand!