Profile 14mm Titanium Rear Hub Axle. This is a conversion kit for Mini, Totem, & Madera V2 Cassette from the 3/8" 3 piece axle to the 14mm Gun Drilled Hollow axle. It will also work with the High Flange hubs. It will not work with the Elite BMX hub. It contains a GDH Cr Mo axle, non-drive cone spacer, & locknuts.