The design brief for the Unite Dub Compatible Crankset 29mm was simple:No specific toolsNo new standardsFuture proofSimpleLight but still robust and stiffAesthetically pleasingAfter seeing the finished prototype cranks, Unite are confident that they've nailed it! Countless hours of development, FEA, field testing and re-designs (there were many) have led them to the finished design. Every single part is manufactured from 7075 aluminium (even the lock ring), both arms are self-extracting and no specific tools are needed for assembly/fitting.There are 2 axle diameters available, dub or 30mm. We asked our customers which they prefer and they were all torn, the simple answer was to offer them both ... More info