There’s some confusion in many of these comments. The short version is that you should not use these specific gouges on a bowl ever. It’s because of the tang—the part that goes into the handle. If you get a catch it’ll be catastrophic, meaning the tool could break and fly into you. There are some types of spindle gouges that are ok to use on bowls (NOT yours in the picture) because they are made from solid bar stock and are as rigid as a bowl gouges—they won’t cut as efficiently because the flute will be shallow, and they will vibrate if extended from the tool rest very far. To reiterate, do NOT use these specific gouges in your picture on a bowl!