The microSHIFT Advent x RD-M6205AM 10-Speed 48T Rear Derailleur is a high-quality bike part designed for mountain bikes. Made of durable aluminum, this rear derailleur features a medium cage length and a sleek black color. It is compatible with microSHIFT brand components and offers a 10-speed setup for smooth and precise gear changes. This set includes the rear derailleur, making it a convenient and reliable option for upgrading or replacing worn-out parts on your bike.