This tool is a fabulous shaping rib for many kinds of cups and mugs. Although it is titled "travel mug" tool, it also works for smaller forms and is useful upright and flipped for a variety of shapes and texture features. I bought this specifically to make travel mugs and have been delighted to find that I have been inspired to use it to make all kinds of new mug forms. This is a versatile and impressive tool to add to your bucket.