Helicoil Drill And Tap Bush Kit

Used for repairing damaged Porsche Exhaust manifold or header bolt holes This enables the drilling and tapping of threaded holes for installing helicoils  used to repair damaged material around the original threaded holes/thread. Kit comprises of a drill bush sized for a M8 helicoil thread and a guide bush that ensures that the helicoil thread tap is inserted square to the cylinder head Both bushes locate into the standard Verboten drill jig. This is suitable for all Verboten drill jigs.