Rims: 15mm deep alloy rims, 19mm external width, 14mm internal width. Hubs: Campagnolo Record hubs. Freewheel Mount: 1.37 x 24 TPI Axle spacing: Front QR x 100mm, Rear QR x 130mm. Bearing condition: The hub bearings are smooth (At CyclingUpgrades we service or replace any rough hub or freehub bearings we encounter in the inspection and cleaning process).