[High Quality Material]: Bike rear derailleur extender is made of high quality aluminum alloy, CNC machined, strong and durable, durable and corrosion resistant
[Stable performance]: Bike rear derailleur hanger for smoother freewheel shifting. It also makes your ride smoother and provides a good riding experience
[Application]: Bicycle rear derailleur extension is used to lengthen the rear derailleur, suitable for modifying 34-52T large flywheels for mountain or road bikes
[Lightweight]: This frame gear hook extender weighs only 22g / 0.78oz, making it very light and portable. You can carry it with you at any time and replace it directly at your convenience
[Great Accessory]: A bicycle alloy rear derailleur hanger is a great accessory for cycling enthusiasts. Vibrant Colors Give Your Mountain Bike More Personality