Brand: ARP Manufacturer's Part Number: 400-8017 Part Type: Studs Product Line: ARP Stainless Steel Accessory Studs Automotive Fittings Part Number: ARP-400-8017 UPC: 672036044435 Base Thread Size: M10 x 1.25 Top Thread Size: M10 x 1.25 Overall Length (in.): 2.15 in. Fastener Material: ARP 300 Fastener Color: Polished Nuts Included: Yes Nut Style: 12-point Nut Material: Stainless steel Nut Finish: Polished Washers Included: Yes Quantity: Sold as a set of 8. Description: ARP stainless steel accessory studs can be used for exhaust systems, intake manifolds, and a number of other uses. They 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. Give your engine a show quality look with ARP stainless steel accessory bolts.