Quality hex head, hardened stainless steel bolts with a show corrosion-resistant finish. Tensile strength rated @ 180,000 psi; superior and stronger than OEM and grade 8 fasteners. Feature precision rolled threads for optimum engagement, to prevent galling and promote more consistent torque loading. Wide underhead flange bolts and hardened chamfered washers provide even load distribution for optimum sealing of surfaces to prevent leaks. Eliminates thread problems associated with chromed and soft stainless steel hardware. Manufactured by ARP to Feulings exact specifications. Kit includes all bolts required for one motor and moly assembly lubricant for installation. Made in the USa.