Shimano mt66 mtb wheelsetust compatibility for all around cross country riding and 2 cross laced tangent straight laced spokes optimizes 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 2 cross laced tangent straight laced spokes optimizes torsional rigidity center lock is a quick simple lightweight and effective rotor mounting system angular contact