Radius Turning Tool, cut ball-shaped end or turns a radius on lathe, cuts ball-shapes up to 3/4 inch diameter, made of corrosion-resistant blackened steel
9x20 Lathe Ball Turners & Knurlers
What Is A Radius Ball Turner? - Summit Machine Tool
Small Ball and Radius Turning Tool - Designed to Cut Round Shapes or Curves in Brass, Aluminum, Steel, Wood or Plastic on your Bench Top Metal Lathe, LittleMachineShop.com (2569) - Amazon.com