designed this as a print-in-place holder for things with a broomstick-like handle less than 25mm in diameter.
Two versions are available - long and short arms.
It is printed upside down you need to mount it with the v of the slots pointing down.
Apply a bead of hot glue to the inside of the two arms to increase the friction to the broomstick.
I printed mine in PLA with no supports .15mm resolution .4mm nozzle
the layer lines at .3mm made the arms not slide freely.
added radius corners to the arms inside the slots.
The author hasn't provided the model origin yet.