LittleMachineShop.com Ball and Radius Turning Tool - Designed to cut round shapes or curves in brass, aluminum, steel or plastic on your own small lathe (2569) - - Amazon.com
R&D Kugelkopf drehen 2 für Drehmaschinen Werkzeuge schnell die Metallbearbeitung Drehen || : Amazon.de: Gewerbe, Industrie & Wissenschaft
Amazon Best Sellers: Best Concave Radius Milling Cutters