Bike Rear Derailleur Hanger MTB Road Bike Rear Tail Hook Bicycle Frame Gear 40 To 50t Tail Hook Extender Cycling Bike Accessory Bullet Points: 1High-quality MaterialRear Derailleur Hanger is made of high-quality aluminum alloy and processed, which is strong, firm, durable, and corrosion-resistant. 2Smoother Gear ShiftingBicycle Rear Derailleur Hanger has an upgraded structure and precise adjustment, making the flywheel gear shifting smoother. It is an excellent accessory for cyclists. 3Extended Rear DerailleurDerailleur Hanger can extend the rear derailleur, suitable for 40T/42T/46T/50T mountain cassettes or 32T/36T road cassettes. 4Change Hangers EasilyWith Bike Derailleur Hanger, it is convenient for you, and you can easily replace and install the hangers to adjust the tightness and shift more smoothly. 5Wide ApplicationsDerailleur Hanger Extender provides bright colors to make your mountain bike more and look different, very suitable for gifting to your family and friends. Description: 1. Made of high-quality aluminum alloy and machined. It is strong, strong, durable and corrosion resistant. 2. The extended rear derailleur is suitable for 40T/42T/46T/50T mountain cassettes or 32T/36T road cassettes. 3. It makes cassette shifting smoother and is a great accessory for cyclists. 4. You can easily replace and install the hanger for smoother tightness and shifting. Specification: Material: aluminum alloy Colors: Red, Black, Blue, Gold, (optional) Size: about 45*25*15mm/1.77*0.98*0.59inch Net weight: 12g Gross weight: 12g Product List: 1*Rear Derailleur Hanger Notes: Due to different lighting and screen settings, the product color may be slightly different from the picture. Due to the difference in manual measurement, please allow a 1-2cm difference in size. _x000D_