Review on Helical Thread Repair Kit M10X1 5 by Rick Gondoras

Worked on my aluminum engine and even better on my cast iron headers. However, I used some of my own drill bits to work with until I needed the drill bit included in the kit. The timing belt tensioner holds up well. Also where the elbows meet the exhaust pipe. The bolt broke and had to be drilled out and tapped. Then insert a new pen. Very happy with my purchase.