This Shimano RD-Z501 Friction Rear Derailleur is a high-quality replacement part for your 5-7 speed mountain bike. Its long cage length provides a wider gear range and smoother shifting. It is compatible with Shimano components and made of durable steel material. This derailleur is manufactured in Japan and comes in a sleek silver color. The set includes the derailleur hanger and it is easy to mount with its hanger mounting type. With its 7 speed capability, this rear derailleur is perfect for any cycling enthusiast. Whether you are replacing an old, worn out derailleur or upgrading your bike's performance, this Shimano RD-Z501 Friction Rear Derailleur is a great choice.