When you loosen the thumb screw it allows it to swivel.
If you loosen it more, it has a spring that keeps one end closed while opening the other end allowing you to remove one ball joint without it falling off.
When you loosen the thumb screw it allows it to swivel.
If you loosen it more, it has a spring that keeps one end closed while opening the other end allowing you to remove one ball joint without it falling off.
Function before fashion!