ORIGIN8 Holdfast 1x Chainring 104mm BCD CHAINRINGS 210243
CHAINRING OR8 HOLDFAST 104mm 30T 10/11/12s 4B BK Holdfast 1x Chainring 104mm BCD 888571018415 ROAD / MOUNTAIN 104mm 4-BOLT 30T Narrow/Wide tooth design for chain retention on 1x systems CNC machined AL7075-T6 Swiss made alloy 10, 11, or 12 speed compatible Mud clearing channels 104mm 4-bolt 30T 1x AL7075 Black 10/11/12sp Narrow/Wide 104mm 30T BLACK