What are these metal things in a strip

what are these?

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They are often used for Wire Wrapping. The short end is soldered to the circuit bord and the long part is used for W W.

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Also used to allow breakout boards to plug in to breadboards.

What is wire wrapping?

it's a simple (one row) fakir's bed of nails:

fakir

it's when the fakir wraps its legs around the wire to climb

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PS/ are you pulling our legs ?

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Fron a a Google search on;

What is wire wrapping?

https://en.wikipedia.org/wiki/Wire_wrap

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