Proterra Tough i30 wheels keep the trail in check while everything else blurs by in the periphery. Reinforced by WTB's proven Dual I-Beam support, Proterra Tough rims feature a 30mm internal width to provide higher tire volume while also increasing sidewall support at lower pressures. Choose Proterra Tough when you need a wheel that won't let you down.Solid rim strip and TCS tape includedFrequency Hub with top-tier EZO bearings30mm TCS Tubeless compatible rims with 3-cross lacing and brass nipplesSwift 6-pawl freehub and 5 degrees of engagementItem SpecificationsCassette Body TypeShimano HGColorBlackDefined ColorBlackHub/Brake Compatibility6-Bolt DiscISO Diameter584 / 650b / 27.5"Rear Axle12mm Thru x 148mmRim MaterialAlloyRim Width (Internal)30Tire TypeTubeless ReadyValvePrestaWheel Size27.5" WTB Proterra Tough i30 Rear Wheel Rear Wheel UPC: 714401452282