6x 3/8” x 3 1/4” Sae Exhaust Manifold Studs + [6] 3/8 Black Phosphate Self Locking Nuts.

6 - 3/8” x 3 1/4”manifold studs 

6 - 3/8”- 16 serrated flanged grade 5 self locking nuts

12 pcs total