Wanted something that could hold my Co2 cartridge that was easy to access. uses a generic magnet in the bottom which is 8 mil. in Diameter and 2 mil. in height.
Here is the link to which I purchased them at: https://www.amazon.com/TRYMAG-Magnets-Neodymium-Whiteboard-Hobbies/dp/B0CDH2HCV9/ref=asc_df_B0CDH2HCV9/?tag=hyprod-20&linkCode=df0&hvadid=693270340461&hvpos=&hvnetw=g&hvrand=5832987784295034022&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9029814&hvtargid=pla-2247465774214&psc=1&mcid=61ed176c7d4e391c909a75cdd4a6c512&gad_source=1
The author marked this model as their own original creation.