Feuling Dress-up fastener kits for Twin Cam engines. Quality 12-point hardened stainless steel bolts with a SHOW corrosion-resistant finish. Feature 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. Top engine builders demand quality fasteners! Secure your engine with complete confidence. Eliminates thread problems associated with chromed hardware. Tensile strength rated @ 170,000 psi; superior and stronger than OEM and stronger than grade 8 fasteners. Manufactured by ARP to Feulings exact specifications. Kits include moly assembly lubricant for installation. Made in the USa.