For metric fine and coarse threads, stainless steel A2, in a case. Repair kit with thread insert made from rhombically profiled wire. Set and screw in like a screw; an installation spindle, comparable in size to a tap, is sufficient for screwing in. If through-threads are required, the driving 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 spindle, tang break-off tool (up to M 12) Type Item Application Repair Thread M12 Thread type Metric ISO Fine Thread (MF) Main colour green