GM Manifold Drill Template Features removes broken exhaust manifold bolts on GM LS III 4.8L, 5.3L and 6.0L motors without damaging the cylinder head tapered bolts center base plate over the bolt holes and slip fit bushing allows you to move from hole to hole without moving the base plate screw extractor is then used to remove the broken bolt includes bushing to drill and tap size when extractor cannot be used double sided drill depth gauge to make sure water jacket is not pierced
