WTB's proprietary 4D spoke drilling prevents binding and lateral loading of the spokes, while the spoke bed itself has been updated to provide a more compatible interface between the spoke and rim. Integration of the all-new Solid Strip the TCS 2.0 rims delivers an easy to mount and reliable tubeless system.TCS 2.0 creates a more robust, easily installed and dependable tubeless system. 4D angled spoke drilling eliminates binding and lateral loading, and disperses tension more evenly over a greater area. Item Specifications: Defined Color, Black, Brake Track, None, Color, Black, Hub Drilling, 32, Rim Width (Internal), 23mm, ISO Diameter, 584 / 650b / 27.5", Rim Material, Alloy, Tire Type, Tubeless Ready, Valve, Presta, Wheel Size, 27.5", Eyelets, None,.