Mountain Bike Frame Gear Tail Hook Extender Aluminum Alloy Bike Accessory Compatible with 34‑52T Large Flywheel

High Quality Material: The bike rear derailleur extenderis made of quality aluminum alloy with CNC machining, sturdy and firm, and corrosion resistant. Stable Performance: The bike rear derailleur hanger makes the flywheel speed change more smoothly. It also makes your riding smoother and provides a good riding experience. Application: The bike rear derailleur extension is used to lengthen the rear chain, and apply to mountain or road bike modification with 34-52T large flywheel. Item Type: Bike Rear Derailleur Extender Material: Aluminum Alloy Gross Weight: 22g Celsius 0.78oz Application: Suitable for mountain or road bike modification with 34-52T large flywheel