Origin8 Bolt 23mm inner width AL6061-T6 alloy tubeless ready disc brake clincher with sleeved joint, eyeletted spoke holes, and post-anodized sanded gloss black finish Origin8 Bolt 23mm inner width AL6061-T6 alloy tubeless ready disc brake clincher with sleeved joint, eyeletted spoke holes, and post-anodized sanded gloss black finish Origin8 Elite convertible MTB disc hubs with anti-bite Shimano cassette body featuring 6 pawl/54 point/6.6? engagement 32 hole 15TA front/32 hole 12TA rear 6 bolt MTB disc hubs laced with J-bend DT Swiss Competition spokes Weight: 838g front/932g rear ISO-Mountain certified and assembled in the USA