Rims: WTB HTZ i30 27.5" ETRTO 584-30 Inner width: 30mm 6061 series aluminum Asymetric and angled spoke hole drilling distributes spoke tension more evenly Reinforced I-Beam profile Strong sleeved joint Drilled for Presta valve TCS 2.0 Tubeless System compatible Solid Strip included Tubeless valve included 32 holesFront hub: Shimano XT HB-M8110-B Boost 15x110mm (Axle not included) Center Lock (6-Bolt adapter included) Polished angular contact bearings Contact sealed hubRear hubs options: Shimano XT FH-M8010-B (Boost, HG) / FH-M8110-B (Boost, MS) / FH-M8130-B (SuperBoost, MS) Center Lock (6-Bolt adapter included) Quick Engagement Freehub, 36 Points of Contact, 10 deg. engagement HG compatible Shimano 11spd and Sram NX / SX splined 12spd (10spd and below needs spacer) MS compatible 12 Spd Shimano Micro SplineAssembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), Polyax Nipples (Black)