Used CAMPAGNOLO Record Track Rear Hub 28 Holes, 120mm Standard English Thread
1.375″ X 24  thread for Cog
Purchased this to install on a Carbon track frame.
The drop outs are very wide on the Carbon frame and I could not find a 10mm X 26TPI axle long enough.
This was Overhauled and New Campagnolo bearings were installed with clear Teflon Superlube grease.
The axle nuts are less than perfect as shown.

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