EMPI’s Chromoly Case Studs provide superior and even clamping force required by today’s hi-performance VW engines. The Chromoly Studs are made from high-grade chromoly and are precision machined to resist stretch and fatigue. These EMPI Chromoly Case Studs are +12.7mm longer than stock length, for stroker applications or other variables. This kit is for dual port heads and measures 8mm. The kit is complete with O.E. style hardened washers and hex nuts.