Details
SUNringlé Part Codes:
281-38185-K003 - Boost 148 x 12 mm, 32 holes, fits SRAM XD cassettes
281-38185-K004 - Boost 148 x 12 mm, 28 holes, fits SRAM XD cassettes
281-38185-K005 - Boost 148 x 12 mm, 32 holes, fits Shimano Microspline cassettes
281-38185-K006 - Boost 148 x 12 mm, 28 holes, fits Shimano Microspline cassettes