How to make a collapsible grappling hook

How to make a collapsible grappling hook
I use it when I go fishing to clean up the fishing spot of weeds, branches and other debris.
I made it collapsible to take as little room as possible in the backpack.
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[@amarchadbagan8667]

Khub sundor seyar valo laglo laik

[@StefanMetalArt]

Thanks!