The On Track Wheel 26" Rear Cass Disc6 DM18 Black is designed for mountain biking enthusiasts seeking durability and performance. Featuring a robust black Alex DM18 dual wall rim with CNC sidewalls, this wheel ensures strength and reliability on rugged terrains. It is compatible with 8, 9, and 10-speed cassettes, making it versatile for various bike setups. The Joytech 6 bolt disc QR hub provides easy installation and maintenance, making this wheel an excellent choice for serious riders.