Here is another handlebar stand with 4 Magnets.

Magnets: 8 mm x 5 mm
Size: 80 mm x 70 mm x 20 mm
Screw: M3 30 mm or bore the hole bigger for M4 or so, fix it with a Nut, don't tight too hard
Diameter: 22.5 mm
Hexagons: only for style

The magnets are pretty good. I don't recommend to use weaker, because of opening. Use superglue, the holes are a tiny bit bigger. The print on the Photo is not the best I've done, but they work on the Trail. You can choose the Filament. In PLA it should be fine, too. But attention: PLA melts at 60° C / 140° F. This temperature exist in the summer in cars for example. And now... repair or die^^

No

Yes

0.3

30%

repair or die