Shimano Dura-Ace 7710 Track Hubset<br /><br /> Low flange track hubset<br /> Solid chromed steel axle with flanged axle nuts<br /><br /> Front<br /> 100mm OL dimension<br /> Solid chromed-steel axle with flanged axle nuts<br /> Borazon treated races with SS ball bearings<br /> Flange diameter: 38mm left and right<br /> Center to flange: 37mm left and right<br /> 203g <br /><br /> REAR<br /> 120mm OL dimension<br /> Threaded for track cogs on both sides (includes 1 lockring)<br /> Solid chromed-steel axle with flanged axle nuts<br /> Borazon treated races with SS ball bearings<br /> Flange diameter: 44mm left and right<br /> Center to flange: 37mm left and right<br /> Weight 298g <br />