SRAM DUB crank BB30 service kit. Contains 2 Enduro 6806/29 ABEC-3 sealed bearings and 2 retaining clips. Bearing Dimensions: OD: 42mm, ID: 29mm, Width: 7mm. Enduro ABEC-3 bearings. For SRAM DUB cranks. Note: SRAM DUB cranksets aren't designed for 68mm or 73mm wide shells with inboard bearings. Use only if your frame has a direct-fit bearing system and the BB shell width is 86.5mm or wider.