*The industry's premier push-through stud with rugged durability * Woody's uniquely designed track-trapping head provides unbeatable stud rigidity and support * Through-hardened carbon steel with 60" carbide insert * 5/16" threads * For use in two-ply tracks and support plates * Proper nuts included * 8755-1175 series come with standard lock nuts * 1325 and 1450 series come with Woody's Short Big Nuts * 1575 series comes with Woody's Tall Big Nuts