ARP 8740 alloy chrome moly steel high performance pressure plate bolt kit. They are rated at 180000 psi many times stronger than Grade 8 fasteners. These premium grade studs are manufactured to exact tolerances heat-treated and thread rolled to ensure consistent clamping force strength and durability. Hex head design with a black oxide finish. Made in the USA.SpecificationsFinish: Black oxideMaterial: ChromolyHead Style: HexSocket Size: 10mmThread Size: M8 x 1.25