ORIGIN8

 6061-T6 alloy construction 8 and 9-speed compatible Silver anodized finish CNC Made in the U.S.A. 104mm 4-bolt 32T 6061-T6 Silver 8/9sp Standard

 AL6061-T6 alloy replacement rings 8, 9, and 10 speed compatible Black anodized with silver CNC machined teeth Available in ramped/pinned and standard styles Made in the USA 104mm 4-bolt 32T Ramped/Pinned Black/Silver 8/9/10sp Standard

 Narrow/Wide tooth design for chain retention on 1x systems 10, 11, or 12 speed compatible Mud clearing channels CNC AL7075 Swiss Alloy 104mm 4-bolt 32T 1x 7075AL Black 10/11/12sp Narrow/Wide

 Narrow/Wide tooth design for chain retention on 1x systems Oval shape for increased power and efficiency 10, 11, or 12 speed compatible Mud clearing channels CNC AL7075 Swiss Alloy 104mm 4-bolt 32T 1x 7075AL Black 10/11/12sp Narrow/Wide

 104mm BCD 4-bolt chainrings for MTB, Boost, and Fat applications Narrow/Wide tooth design for chain retention on 1x systems 10, 11, or 12 speed compatible Forged and hard anodized AL6061-T6 alloy construction 104mm 4-Bolt 32T 1x AL6061 Black 10/11/12s Narrow/Wide