Upgrade your mountain bike with the Shimano XTR M950 MTB Cassette Hubs. These hubs are compatible with a variety of bike types including universal, cyclocross, road, and mountain bikes. They come in a stylish gray color and are made of high-quality aluminum and steel materials.The hubs have a 32-hole design and are compatible with 8,9,10,11-speed systems. They feature a quick-release attachment style and a HyperGlide freehub/driver type for smooth and efficient gear changes. The set includes two hubs and is made in Japan. Enhance your biking experience with these top-of-the-line hubs from Shimano.