High quality: sturdy construction made of solid material for durable and reliable use. Ideal for everyday use, e.g. in car workshops Comprehensive: this special repair kit contains all the tools needed to drill out the broken screws and the Practical: as the camshaft cover or valve cover does not need to be removed, only minimal disassembly is required. The cylinder coil Simple: the damaged thread is refurbished to M8 x 1. Then one of the attached threaded sleeves (male thread M8, female thread M6) is Details: 10-piece repair kit for injector thread, consisting of: 1x spiral drill bit 6 mm with adjustment ring for drilling depth, 1x step drill 7 to 8 mm