The DT Swiss 1950 Rims with DT Swiss XD Cassette Driver Hubs are a high-quality set of 27.5-inch aluminium rims designed for mountain bikes. The set includes hubs and a cassette/freewheel, with 28 spokes holes and a tubeless design for enhanced performance. These black rims are lightweight, weighing less than 1000g, and are compatible with Presta valve type bikes. Made in Taiwan, this product is perfect for riders looking for durable and reliable wheels for their cycling adventures.