SPEEDFACTORY RACING UNIVERSAL TITANIUM EXHAUST OR INTAKE MANIFOLD BURNT STUD KITSpeedFactory Titanium studs are made of Ti 6Al 4V and incorporate a 3mm hex key tip that allows them to be easily installed using an Allen wrench. A Titanium 10mm 12 point nut and washer are included. Use of factory exhaust manifold bolts and studs, especially with an aftermarket intake manifold or header turbo system, can result in stripped or broken bolts and inadequate clamping force, resulting in leaks. Our studs look great and will allow you to