Description Bb Adapter Origin 8 BB30 To Fit Sram Gxp 24/22mmRD/Mtn w/Sealed Bearing BB30 Adaptor Sram Gxp in Black Brand: ORIGIN8 Model: BB30 Adaptor Specs / Variation: Sram Gxp Color: Black Additional Specifications Designed for installing various spindled cranks into BB30 frames Fits 68/73mm wide x 42mm Inside Diameter shells Cnc-machined AL6061 alloy adaptors Press-fit sealed premium bearings (6806) Low-friction dual seals Shims and retaining clips included 68/73mm BB30 Sram Gxp 22/24mm AL6061