Hamster wheel adaption on Aquarium

Hi,

I saw the very nice Adaption part for glass Aquarium Mounts from https://www.thingiverse.com/thing:675395

But the thing I needed was a hamster wheel, which is mounted with bearings of type 608zz. The bearings use to have a 8mm inner Diameter. so i redesigned the part for M8 screws and a 608 bearing.
due to the differing prices of magnets, i used 4 magnets of size 40x20x2mm to save up the shipping costs. I glued the magnets in with regular glue.

Just tighten the screw with a m8 bolt