<p>MilwaukeeBicycle Co. Hubs<br /> <br /> 32-Hole<br /> Rear Spacing: 120mm Spacing<br /> SUPER Smooth Sealed Cartridge Bearings (comparable to hubs 5 times as expensive)<br /> Real Tracknuts<br /> Polished, then anodized for a superb look<br /> Hi-Flange - with oval cut-outs for that classic look.<br /> Fix/Free Threading (aka-Threaded Standard;Threaded Track) - rear hub will accept track cog and lockring on one side and freewheel on the other.<br /> Fix/Fix Threading (aka-Threaded Track) - rear hub will accept track cog and lockring only.<br /> 42mm Chainline - to work with track bikes and converting most road bikes to fixed gear.<br /> <br /> For the Wheel Builder:<br /> <br /> REARHUB:<br /> 31.5mm Flange Width<br /> 61.5mm Flange Diameter</p>