Stainless Steel M10 Turbo Hardware
The 1.5 (standard pitch) on the manifold side and 1.25 (fine pitch) on the turbo side, the standard pitch thread will stay put in the manifold while the fine pitch 1.25 nut will be easy to remove without dislodging/unthreading the stud from the flange.
**We recommend using a thread chaser to clean out the threads for install**