Professional glow plug heater element removal set to extract the heater element which can break off while glow plug is pull out. Saves a lot of time and money as there is no need to remove the cylinder head. Designed to work by drilling and tapping a thread into the broken element then supplied adaptor can take glow plug. Set includes HSS drill bits (Ø2.5x120mm, 3.2x140mm), taps (M3x0.5, M4x0.7), drilling/ tapping guides (M8 x1mm, M10x1mm, M10x1.25mm) and M3, M4 threaded rods. Made of hardened and tempered Chrome Molybdenum (Cr-Mo) steel with manganese phosphate finish for extra corrosion resistance. Supplied in handy storage case.