1 set x Permaseal Exhaust Manifold Gasket. 3 pcs x M8 Studs & Nuts (Turbo to Exhaust Manifold). This Installation Stud & Gasket Kit Is Suitable For Turbo Pros High Tensile Stud And Nut Kit Is Manufactured From High Tensile Steel, These Studs Have A Higher Yield Strength And Tensile Strength Than Regular Mild Steel Grade.