Needing help finding plastic collets 1

[Toivul]

I need help finding a source for small locking plastic collects. The kind like you would find in-between segments of a collapsible hiking staff. They need to have a locking ring on the outside and be able to fit shafts with a diameter of .75" to .125". I would appreciate any suggestions. So far my searches haven't turned up much.

 

[MintJulep]

http://www.bpfittings.co.uk/pc/Twistlock-Telescopic-Tube-Adjusters-c2987.htm