Squeeze clip for filament spool spindle / axle

For my Anet A8 I wanted a quick release alternative to the supplied M8 nuts, so I designed this squeeze clip. To use just squeeze the arms together slightly to release the grip on the rod and slide off. They won't grip as well as a nut with lock nut, but it works fine to hold the spindle in place.

I made 2 sizes one for the stock M8 threaded rod with an inside diameter of 7mm and a smaller one for a 6.4mm guide rod I salvaged for a scanner, used for a different spool stand.