Cylinder Head Bore Jig Set

 Features: 

*  This universal adjustable drilling allows broken or sheared studs-especially on

   cylinder heads or exhaust manifolds to be quickly and accurately extracted,

   without the need to remove the cylinder head (Male Thread M8 and M10)
*  Time savings of between 2 and 4 hours can be achieved as the cylinder

   head has not to be removed from the vehicle.
*  Straight boring out of old screw.
*  Universal usage.