Specification: Brand: ROCKBROS Brake: Disc brake Frame height: 50mm Weight: ≈1420g(Black) /≈1500g(White) Rim material: T700 carbon fiber (T800 reinforced) Outer rim width: 28mm Inner rim width: 21mm (compatible with 25-32C tires) Spoke type: XED 1423 Number of spokes: F20/R24 Bite ratchet: 36T (universal DT system) Tower base specification: Standard SHIMANO-11S (XDR-12S needs to be purchased separately) Compatible flywheel: SHIMANO 8-12 speed Compatible tires: Split tires, vacuum tires (with mounted Vacuum pads) ‍️Carbon fiber material: The ROCKBROS carbon fiber wheels are made of T700 carbon fiber, which ensures the ultimate rim rigidity and light weight, so that you can easily control it in all road conditions. ‍️Improved riding efficiency: The high frame design and 36T ratchet engagement greatly reduce wind resistance, improve transmission efficiency and pedal responsiveness, so that you can maintain good handling even in headwinds and are not afraid of challenges. ‍️Excellent design: 28mm outer width and 21mm inner width, suitable for 25C-32C tires, reduce air turbulence, provide better aerodynamic performance and ensure a comfortable riding experience. ‍️Reduced Losses: Smoothed, edge-treated bearing contact surfaces reduce bearing losses and have similar spoke tension on the drive side as on the non-drive side for improved lateral stiffness and a plus for your ride. ‍️Excellent Performance and Aesthetics: compatible with vacuum tires and clinchers, laser logo, cool appearance. With an optimized wheel structure and a wheel weight of only 1420g, it can easily improve your acceleration performance and allow you to accelerate on the track.