Shimano mt66 mtb rear wheelust compatibility for all around cross country riding with 2 cross laced tangent straight laced spokes for optimized torsional rigidity features shimano engineered proprietary sealing tubeless system 24 6mm wide rim profile 19c ust tubeless compatible quick double pawl engagement freehub optimizes traction center lock is a quick simple lightweight and effective rotor mounting system angular contact bearings with double contact high quality sealing rim height 19mm