12-Point Exhaust Stud KitQuality 12-point heat treated 8740 chrome moly steel bolts with black oxide finish Features precision rolled threads for optimum engagement, to prevent galling and promote more consistent torque loading Wide underhead flange design provides even load distribution for optimum sealing of surfaces - preventing leaks Tensile strength rated @ 170,000 psi - Superior & Stronger than OEM & stronger than grade 8 fasteners Manufactured by ARP® to Feuling’s® exact specifications Includes moly assembly lubricant for installation Includes 4 exhaust studs Made in the USA