Special M8 nut that tightens with a 10 mm wrench, extremely useful when there is very little room for a 13 mm wrench and you can use a 10 mm wrench, making it easier to access tighter spaces; Fiat Punto GT, etc.
Aerospace quality, made by the most renowned American manufacturer of competition-grade fasteners in the world.
We use these copper-coated nuts especially on exhaust manifolds in spots where a wrench has difficulty fitting; these nuts clearly make the job much easier.
To purchase multiple pieces, increase the quantity.