The AXIS 4.0 SCS Disc wheelset is performance packed with the patented SCS hub system for a proper chainline on short chainstay performance road and cyclocross bikes. The tubeless-ready (with tape and sealant) rim has an internal rim width of 21mm providing a better tire profile for enhanced traction. This wheelset is built with QR hubs for use on SCS bikes with open dropouts. Assembly Method: Machine-built Braking Surface: Disc brake only Front Hub: AXIS Disc SCS, Centerlock, sealed cartridge, alloy shell, QR Front Spoke Pattern: Two-cross/Radial Nipple Type: DT Swiss Pro Lock hexagonal Rear Hub: AXIS Disc SCS, Centerlock, sealed cartridge, 3 pawl ratchet, 11-speed, QR Rear Spoke Pattern: Two-cross Rim Depth: 23mm Rim Material: Alloy Rim Type: Alloy clincher, tubeless-ready Rim Width: 21mm internal, 26mm external Spoke Count: 24 front, 24 rear Spoke Type: DT Swiss Competition J-bend Total Wheelset Weight: 1,635g