What is this metal springy thing inside the shaft called

[Polymer]

Hello,

What is this metal springy thing inside the shaft called that clicks into the outside pipe?
Would anyone know where to get them in Europe?



Thank You!

[Koala]

No idea. Junk shops and charity shops here in the UK normally sell crutches for £1 a pair cheaper than buy some I would guess. Same ones are also used in Zimmer frames

[Koala]

http://gusyval.en.made-in-china.com/...le-Crutch.html

[FatBob]

This place calls them spring clips; http://www.dmobx.com/partsandaccessories.htm

[Polymer]

Thank You !

[geoscash1]

Cheap on ebay from Garrett
http://www.ebay.com/itm/290976332246?

[Technomaniac]

A cable tie through the hole might do until you acquire one!