Large Head 2.5" Inch Lathe Milling R8 Shank Fly Cutter with Indexable Flying Tool

A fly cutter is a machining tool used in milling operations to create flat surfaces or contours on a workpiece. It typically consists of a single-point cutting tool (like a lathe tool bit) mounted in a spindle or fly cutter arbor. The cutter rotates as it cuts, and the workpiece is typically moved underneath it on a milling machine table.