For metric fine and coarse threads, A2 stainless steel, in a repair kit with thread inserts made of rhombically profiled wire. Installation is like screwing in a screw; only an installation mandrel, comparable in size to a tap, is required for insertion. If through threads are required, the tang can be broken off at the notch (predetermined breaking point) after installation. Consisting of: Helicoil plus thread insert in three lengths, spiral drill (up to M 12), HSS hand tap, installation mandrel, tang break-off tool (up to M 12) Item Article Application Repair Thread M8 Thread type Metric ISO fine thread (MF) Main color green