A handy way to keep track of how many beers or any other beverage you've had. 

Insert magnets and stick to you beer fridge or any other magnetic surface.

Designed to use 1/8 inch metal rods to connect the ends and disc magnets to glue into the base of each end.

https://www.magcraft.com/magcraft-nsn0802

https://www.mcmaster.com/89535K16/