A simple .NET core application that will change all the slots of your items from an item_db.txt. Great if you want to have 4 slots on all items. But it also has customization. Please read the readme.txt.
Four slot all items! And more! Free to use and share.
It's called Item Slotter "2" because the original I made just for myself, but I wanted to make a version everyone can use. Hope you enjoy.