Wheels machine built and hand finished in BarnoldswickFortus 30 rim built on Hope's bullet proof Pro 4 HubsStandard J-bend hub wheel buildLarger diameter spoke flange, to build stiffer wheelStainless Steel, sealed cartridge bearingsWelded and eyeleted 6061 T6 aluminium rimTubeless compatible (requires tape and valves)Black Sapim Race Stainless Steel double butted spokes built with Silver Brass nipplesFront wheels supplied 15mm conversionsBoost front wheel option comes built with 110x15mm Boost specific hubInternal width: 30mmExternal width: 35mmProfile depth: 23mmRim ERD: 555mmRecommended tyre width: 2.4 - 2.8Spoke count: 32Rim only weight: 27.5 - 675gWheelset weight: 2305gBoost 148x12 hub spacingShimano HG compatible freehub