A durable Tubeless Ready mountain bike wheelset with a Rapid Drive 54 hub. The Bontrager Line Comp 30 is ready to rail on any trail! Details: Front Hub: Bontrager Rotor: 6-bolt Axle/spacing: 15 x 100mm Convert to 5mm x 100mm with Bontrager End Caps Rear Hub: Bontrager Rapid Drive 54 Rotor: 6-bolt Axle/spacing: 12 x 142mm Freehub: Shimano HG, Shimano Micro Spline*, SRAM XD* Included Points of Engagement: 108 Convert to 5mm x 135mm with Bontrager End Caps *Service charge to install Shimano Micro Spline or SRAM XD freehub is $35. Rim: Bontrager Line Comp 30 Rim Size: 27.5", 29" Material: Alloy Hole: 28h Internal width: 29mm External width: 34mm Does not include skewer, reflector, rim strip, valve, or owner's manual Spoke: Type: 14G j-bend spokes Nipples: Brass # of spokes: 28 Compatibility: 27.5" & 29", 12 x 142mm framesets