Origin-8 Alloy Ramped Chainrings Chainring Or8 104mm 32t Ramped 4b Bk/sl 6061-...Origin-8 Alloy Ramped Chainrings Chainring Or8 104mm 32t Ramped 4b Bk/sl 6061-T6 alloy replacement rings 8 9 and 10-speed compatible Black anodized with silver CNC machined teeth Available in Ramped and pinned and standard styles Made in U.S.A. 104mm...more