Telescoping Antenna Repair - What tools/technique?

I must not know my own strength. I have several different radios that have different telescopic or telescoping antennas and I seem to have pulled one section out of its mating section on each of them.

Is there anyway to repair these antennas? I mean I can re insert the smaller portion, allong with the copper looking extra tabs, back into the larger diameter antenna portion. However, I don't know how to bend or curl the ed to the larger diameter section back into a lip in order to once again "permanently" capture the smaller section within the larger section.

Is there a special tool for this? Can you provide a link to a picture or drawing? Is there a special technique to do it using ordinary tools?

Thanks