The revered Shimano Ultegra hub is paired to a premium DT Swiss GR 531 gravel rim to create the ultimate value and performance. Tubeless ready, and pre-taped 24mm internal width rim provides an optimal set up with gravel, adventure, and modern higher volume all-road tires. Featuring DT Swiss Competition butted spokes and DT Swiss nipples, with thru axles and Center Lock disc for compatibility with most modern road and gravel bikes. The Ultegra/GR531 wheels make a great replacement for high-end bikes, or an optimal upgrade for entry level and mid-level bikes. GR531 alloy rim features a 24mm inner width, designed for wide knobby tires up to 53 mm Professional tubeless tape installation included DT Swiss Competition Spokes 28 spokes Specifications Cassette Body TypeShimano/SRAM 11 Speed RoadCassette Body TypeShimano/SRAM 8, 9, 10 SpeedColorBlackDefined ColorBlackHub/Brake CompatibilityCenter-Lock DiscISO Diameter622 / Road / 29"Rear Axle12mm Thru x 142mmRim MaterialAlloyRim Width (Internal)24Tire TypeTubeless Ready ClincherValvePrestaWheel Size700c