Edelbrock part #7805 Performer-Link timing chain is for use with Edelbrock or stock cams. They have a solid-bushing chain for a true bearing surface that rolls with the sprockets, eliminating chain stretch. Cam sprockets are made from 35,000 psi tensile s Product Features:Keyway AdjustableDouble Roller Timing Chain TypeInduction Hardened Billet Steel MaterialNo Machining RequiredIncludes Solid Bushing Chain