Building upon the already proven Duroc platform the new Duroc 30 Pro features the same trusted double-wall, welded alloy tubeless rim but is now blessed with the all-new Super Bubba X hub.The wheels are laced with straight pull Wheelsmith DB14 spokes and alloy nipples making them super strong and fit for any type of riding.Who's this item for: Enduro, Trail and All-mountain riders looking for a super reliable, responsive and reliable front wheel.Hub Materials: 7075 Aluminium.Spoke hole count: 28 spokes. Bearing style/amount: Dual 6902 bearings.Rims: SunRingle Duroc ProTubeless: Yes.Weight: 806g.Rim Dimensions: 27mm internal. Materials: Welded alloy, with bead-blasted anodization.Spokes: Wheelsmith DB14 spokes Material: 304 Stainless steelJ-bend / Straight pull: Straight pull.Nipples: Alloy nipples.