I purchased these hubs last fall to swap out my Onyx Classics on a set of Reserve 30 HDs but ended up buying a different set of 32-hole wheels.  Thus, these are new in box with warranty cards.  These 28-hole hubs have Boost spacing (110x15mm front, 148x12mm rear), 6-bolt disc mounting, a SRAM XD driver, and ceramic bearings.  Please feel free to contact me with any questions.