Prowheel Triple/double Chainring 64/96/104bcd Mountain Bike Chainwheel Features: Product: Crown Bcd: 64bcd/96bcd/104bcd Gear: 22t 24t 30t 32t 40t 42t 44t Applicable models: mountain bike Contact us if you have questions. Specifications: Brand: PROWHEEL Material: steel, aluminum Product specifications: 15x15x1cm Package Includes: 1 Pcs Crown. note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!