Altus FH-MT200-B Rear Freehub, designed for mountain bikes using a "Boost" quick-release (QR) setup
Axle Standard: QR x 141mm Boost QR
Brake Compatibility: Center-Lock disc rotor mounting.
Cassette Compatibility: Designed for 8, 9, or 10-speed Shimano/SRAM HG-style cassettes.
Hub Drilling: Typically comes with 32 holes (32H) for spokes.
Bearing Type: Uses a loose ball (cup and cone) bearing system for easier maintenance.