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Brommers
hippy
Anyone know what the difference is between these?
https://www.sigmasports.com/item/Wheels-Manufacturing/Threaded-To-30mm-Angular-Bearing-Contact-Bottom-Bracket/EM1W
https://www.sigmasports.com/item/Wheels-Manufacturing/BSA-30-Bottom-Bracket-Steel-Bearings/EQ65
One of them specifically mentions Rotor 3D cranks but they seem similar.