MT620 tubeless ready 30 mm internal width disc wheel System brings high performance 12-speed MICRO SPLINE technology to a affordable price point.The Hub uses angular contact bearings designed to cradle the balls giving both radial and lateral support for superior strength and durability in real world riding conditions. They also offer precision bearing adjustment and easy maintenance,Super quick engaging MICRO SPLINE 12-speed Freehub body giving near instant power transfer,Easy to use Centre Lock Disc Rotor mount for secure hassle free setup,Weight is kept down by using aluminium axles,24 round 2.0 mm stainless steel J-bend spokes,Contact seals with internal grease sleeve to keep the elements out and the grease in,Clincher tyre compatible rim for use with 2.25 - 2.5 inch tyres,For use with MICRO SPLINE 12-speed cassettes only,Internal rim width 30C,Axle not included,Colour Black,Wheel Diameter 29 inches,Product Type Rear Wheels.