| Quick release pins can be grouped as
locking or non locking
In the locking variety, the 2 balls are backed by the spindle when installed, in the non locking type, the single ball or 2 balls are backed by a spring (or pellet)
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| Locking Double Action - where the spindle can be pushed in or pulled out to release. The spindle has 2 grooves which can be aligned to release the pin. This is the classic steel 'Pip Pin'® from Avdel-Textron. |
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Locking Single action utilises a button to depress the spindle to release |
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