The FUNN Solo Narrow-Wide Chainring 32T 104BCD Black is a lightweight, CNC-machined 7075 aluminium chainring engineered for single-ring drivetrains; its alternating narrow-wide tooth profile secures the chain without a guide, offers compatibility with 9–12 speed chains, and uses stepped bolt holes to maintain a precise chainline for reliable shifting and retention. Features Narrow-wide tooth profile for improved retention CNC machined 7075 aerospace grade aluminium Compatible with 9 to 12 speed chains Fits 104 BCD single chainring setups