Similar to a Formula, Velocity, All City or Godspeed, but with better quality bearings and a much nicer lockring.  This is a solid sealed bearing flip flop hubset imported by EAI and designed to keep on ticking. Track spacing (100mm front / 120mm rear) with 32 holes (for spokes, of course) and fixed/free rear hub threading. White is always right!  Lockring included.