●【Product Specifications】: This bicycle chain ring is an excellent replacement for repairing bicycles. Colour: Black, Red (optional); BCD: 104mm; Teeth: 32, 34, 36, 38 (optional); Weight: approx. 50-73g ●Standard Tooth Design The ring of mountain bike chain has excellent manufacturing process and standard tooth design, which ensures optimal chain retention, increases service life, reduces friction and noise. ●【】: This bicycle chain ring is made of high-quality aluminium alloy, which is strong and durable. It is not easily damaged and deformed, has a reliable quality and guarantees high strength for a long service life. ●3 sizes: The steel bicycle crank chain ring is easy to install and fits the 104 mm screw model. It is possible to choose from 32, 34, 36, 38 teeth. ●: Our product has a 180-day period. If you have any questions about this ring, please feel free to contact us, we will do our best to help you solve your problem.