Compatible with 12mm Thru Axles systems utilizing Sram Direct Mount UDH derailleur interfacesWorks with Saris trainers including M2, Fluid2, and Mag+Available for standard 142mm spacing or 148mm BoostCompatibility with most major wheel-on trainer brandsCompatible with 1.00 or 1.75 thread pitchUDH compatibility for newer framesThru axle adapter148x12UPC/EAN/GTIN: 198869009668