Alex Blizzerk rims.Item Specifications: Brake Track, None, Color, Black, Defined Color, Black, Hub Drilling, 32, ISO Diameter, 559 / 26" mtn, Rim Material, Alloy, Rim Width (External), 70, Rim Width (Internal), 64, Tire Type, Clincher, Tire Type, Tubeless Ready, Valve, Presta, Wheel Size, 26",.