Universal Glow Plug TipExtraction Set - Master M8X1-M9X1-M10X1-M10X1,25. Double Pulling SystemFor the extraction of the electrode terminal part of the glow plugs (M8, M9, M10) in the event of breakage or sticking inside the seat port, which is otherwise impossible to remove.The set includes all the tools needed to safely remove the terminal part of the glow plug electrode without damaging the cylinder head.This operation can be completed with a slide hammer or threaded extractor.