Product Description 16pc GLOW PLUG REMOVAL & THREAD REPAIR KIT Designed for extracting damaged or stuck glow plugs in confined spaces Safely removes glow plugs to reduce the possibility of damage during extraction Ideal for repairing, drilling and centering glow plug threads in cylinder heads Ergonomic design allows precise, fast & easy operation Includes adaptors for removing M8 & M10 glow plugs If damage to a thread needs unavoidable repairing this kit allows you to drill & tap threads as well as centering plug threads in cylinder head.