29mm open bore adapter is used to press 29mm x 42mm (DUB Compatible) sealed bearings. The adapter is machined with one step at 29mm OD, which fits into the center of the sealed bearing.
Will press in Wheels Mfg SRAM DUB compatible bottom bracket cups.
29 SRAM-OB is designed specifically to press in 6806/29 sealed bearings and will also press in Wheels Mfg SRAM DUB compatible bottom brackets. May not be suitable for pressing in other brand's DUB compatible bottom brackets. If used with other brand BBs, make sure the adapter is pushing on either the bearing outer race, or the BB cup itself. Do not push on the bearing seal.