Brush System

It is an item sold only by the Animal Breeder vendor. The Brush looks like the image below.





So what is it good for?

It lets you craft and use items such as shrink pot, greater heal pot, animal dye tub and pet leash (shrink).

Click the Brush and a menu like this one opens up.

All of the categories in the Brush crafting menu:

Pet Potions,
Normal Pet Dyes,
Unique Pet Dyes,
Rare Pet Dyes,
Misc.

To use this craft system you need the Animal Taming and Animal Lore skills.

Whatever you need to craft an item is listed in the Materials section, as shown in the image below.

The item you are about to craft is shown with its picture and name in the top left corner, so you can see exactly what you are making.

The (Success Chance) field tells you the odds of crafting that item on your first try.

The image below is an example.

To craft the item, hit "MAKE NOW" in the bottom right corner. If everything listed under Materials is in your backpack, the item is crafted.

So what does the item in this picture need? Leather: 10 and Iron Ingots: 25. If you have them in your backpack, the craft goes through successfully.