Application: Designed to remove broken exhaust manifold studs on 4.6L, 5.4L and 6.8L V10 2 valve and 3 valve for Ford Triton engines without damaging the cylinder head. Function: Interchangeable plates and alignment pins help center drill on the broken stud. Depth gauge for drilling is marked on the template. The stud extractor is then used to remove the broken stud. Package Includes: base plate, valve adapters, double-ended drill bit, allignment pins and stud extractor. Premium Quality: .