Our chainrings are designed for a single 1x9 or 1x10 gear set-up with a chainguide Part Number: CRS0432S, CRS0436S, CRS0438S, CRS0432N, CRS0440S, CRS0434GO, CRS0434S, CRS0432GO, CRS0436N, CRS0440N, CRS0438N, CRS0438GO, CRS0440GO, CRS0434N, CRS0436GO Barcode: 5055168038131, 5055168038100, 5055168038193, 5055168038162, 5055168038179, 5055168038209, 5055168038148, 5055168038070, 5055168038117, 5055168038124, 5055168038216, 5055168038087, 5055168038186, 5055168038155, 5055168038094 Product Code: HOP CSR