This is for a newly hand built 27.5 inch 650b gravel bike rear wheel incorporating brand new black 28 hole DT Swiss G540 db disc rims, brand new Bitex BX106 centrelock disc specific hubs, Sapim Leader silver stainless steel spokes and nickel plated brass nipples. After extensive testing DT Swiss have settled on a full 24mm as the perfect width for modern Gravel bikes. The added width gives better support to wide, 35c or larger tyres, allowing the use of lower pressures, enhancing grip & comfort whilst reducing rolling resistance & tyre flex under cornering. Robust, sleeved construction gives a great value package for a wide gravel rim with a suggested maximum system weight of 130kg. The rims can be used with or without tubes. The Bitex BX106 hubs are good lightweight centre lock hubs that are both reliable and durable - ideal for a road/gravel disc setup with a range of freehub options. The hubs are set for 142mm x 12mm through axle. Choose between a standard 11 speed Shimano HG freehub, SRAM XDR driver, or Campagnolo freehub. The rims are 3-cross laced to the hubs with new Sapim Leader silver stainless steel spokes and nickel plated brass nipples. This beautiful wheel has been hand trued, dished and spokes tensioned according to rim manufacturers recommendations. Wheels are bubble wrapped and boxed properly. Sent using insured and tracked postage. Please look at my other items. Thank you for looking.