A free mod for Stardew Valley, by bcmpinc.
When you install this mod, you will be able to access the additional six-ring slots in your inventory. The default number of ring slots available is six, but you can configure this number to be any value between two and 20.
The reason why this mod is able to add six more ring slots to your inventory is that it doesn’t change the game mechanics.
If you want to equip the additional ring slots, simply click on the item in the inventory, and you will be able to configure the number of ring slots.
Note: There are various bugs in this game. If you encounter new ones, make sure to report them to Github.