Henri,
For Quick Knurl types the length one can knurl is dependent on the diameter of the work: if it is less than 20mm it can pass through the body of the chuck so there is no limit to work length. Other than that one is limited to the chuck depth plus the length of the "arms" . Unless there is a giant version of this Quick Knurler then you have to stick to the pressure type for those motorcycle foot pegs, I think. The again there might be some sort of quick knurler that fits in the tool post?
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