Portable Transmission Tool : The perfect addition to your cycling toolkit, it's compact and ready for action whenever needed. Smooth Shifting : Precision engineering guarantees effortless gear changes, no matter the challenge ahead. Easy-installed Design : Designed for quick installation, saving you time and hassle. Wide Application Scope : Compatible with various bike types, from rugged mountain trails to smooth city streets. High-quality Production : Robust materials ensure reliability and longevity, so you can focus on the ride, not repairs. Your cycling escapades deserve the best, and that's exactly what we offer with our Bike Rear Derailleur. This indispensable tool is not just an accessory; it's your partner in adventure. Engineered for seamless integration and smooth shifting, it transforms your cycling experience into a symphony of motion. Wherever your path leads, this derailleur is ready to take you there with grace and precision.