Rapid Drive 54 hub quickly and efficiently transfers effort into forward momentum. Wheels are upgradeable to 108 points of instant engagement. Tubeless Ready (TLR) rims allow for quick transition to a tubeless system upgrade. Non-Boost 142x12 and 100x15 thru-axle spacing is convertible to 135x5 and 100x5 QR. An ultra-durable rim with 29 mm internal, 34 mm external width, 28 hole fr/r. 28 front/rear 14G spokes with brass nipples. 6 bolt disc, Shimano 10-/11-speed, SRAM XD driver available separately. Does not include the skewer, reflector, rim strip, valve or owner's manual.