Upgrade your exhaust hardware with these STAINLESS STEEL ARP exhaust manfold studs and nuts. ARP stainless steel exhuast studs are made of ARP’s Stainless 300 and are impervious to the rust and corrosion that plague ordinary fasteners. The studs feature a unique nut starter nose and a hex broached tip allowing them to be easily installed using an allen wrench. Stainless Steel 12 point nuts and washers are included.