Origin8 Alloy Blade Chainrings, Silver Review Posted by GiantPandaisy June 16, 2018 in Drivetrain Components 6061-T6 alloy construction 8 and 9-speed compatible Silver anodized finish CNC Made in the U.S.A. Origin8 Alloy Blade Chainrings in various sizes Cycling Origin8 Outdoor Recreation Parts & Components Sports & Outdoors