This is a brand new, never laced, NOS pair of front and rear Shimano Dura-Ace high flange track hubs, model HB-7600. NOTE that these are single-cog track specific hubs, not flip-flop or single speed hubs. Comes with track nuts and an NJS stamped Dura-Ace lock ring. These have 120mm rear spacing and 100mm front spacing. These are high-gleam finish for sure and have the ridiculously smooth bearing roll you'd expect from high end hardware of this caliber, a favorite of Keirin racers.