This Hope conversion kit enables you to use your favourite Pro 2, Pro 2 Evo or Pro 4 front hub with the newest road, gravel, or cyclocross bike's 12mm thru-axle forks.It converts standard (non-boost) Pro 2, Pro 2 Evo or Pro 4 front hubs to suit 12mm thru-axle forks commonly found on road and gravel bikes. More info