This 104 BCD Narrow Wide Chainring is made of 7075-T6 aviation aluminum alloy, providing both light weight and high strength. Its precision machined and anodized surface ensures durability and corrosion resistance. With a narrow wide tooth design, it greatly increases the grip force, reducing the risk of chain drop even on bumpy roads. Compatible with 9/10/11-speed systems and suitable for various bike cranks with a BCD of 104mm. Upgrade your cycling experience with this reliable and efficient chainring. Features: - Light weight but also high strength. - Fit for various kinds of bike crank which BCD is 104mm. - Precision machining and anodic oxidation electroplating, keep medals smooth surface, bright color, not faded and corrosion resistance. - The narrow wide tooth design increasing the contacting area with the chain greatly, so that each of the teeth can be fully inserted into the chain, increase the grasp force, make you no longer worried about the chain dorpped, easy to pass through the bumpy road. Specifications: Material: 7075-T6 aviation aluminum alloy Range: 32T, 34T, 36T, 38T Compatibility: 9/10/11 speed Size/BCD: 104BCD Package Included: 1 104 BCD Narrow Wide Chainring Notes: 1. Manual measuring, please allow 1 ~ 3mm error, thank you. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.