A tool for pottery. In this link, the middle one. https://www.amazon.com/Nozomy-Tools-12PCS-Pottery-Sculpting/dp/B09247GQ92/ref=mp_s_a_1_4?c=ts&keywords=Ceramic+%26+Pottery+Tools&qid=1685299570&s=arts-crafts&sr=1-4&ts_id=12896461