These M type freehubs fit all our hubs with 54 points of engagement (27 tooth drive rings):
All J-bend 6-bolt hubs
All boost 110/148 hubs (centerlock or 6-bolt)
The Microspline freehub includes a new axle which is needed to retrofit this to an exisiting hub. Please let us know in the order notes if you need an axle for 12×142 or 12x148mm. All the other freehubs fit the standard axles.