The file 'Dual 18650 Battery Holder With Room For Magnets 3D Printer Model' is (stl) file type, size is 92.9KB.
Battery holder for 2 x 18650 battery's with room for 2mm magnets.
I use it to carry around extra battery's for my vape mods.
Magnets I use are from https://www.fasttech.com/products/2130/10008149/1725704