item durability upgrade

So last time I worked on full-enchanted iron armor like 20 minutes later it was almost broken so I recommend adding a a "wrench" so our items can survive longer, it gives the item a bigger durability bar if used on it, and also  it could be used to repair anvils. The "wrench" would have 6 uses and it would be crafted in a shape of a wrench from 4 iron. To use it you need to put the selected item in the crafting table with the wrench. How I said after crafting the "upgraded <item name>" the wrench would you would still own the wrench, the wrench would be just just with less uses.