These cylinder head studs are an innovative design that is unique compared to anything else on the market today. The kit includes 24 studs, washers, head nuts, anti sieze and loctite. The polished studs have rolled threads; the case end is slightly longer, permitting it to thread deeper into the case, and the head end is fine threaded for smoother and more consistent torque. The nuts are 12-point with a serrated flange and the washers are hardened ground.