2 unopened boxes The Kennametal SDEB080204 KC725M Chamfer Mill Insert is a high-quality tool designed for drilling operations in the machining industry. Manufactured by Kennametal, a reputable brand known for producing reliable and durable cutting tools, this insert is specifically designed for chamfer milling, providing precise and accurate results. With its focus on functionality and performance, this chamfer mill insert is a valuable asset for businesses involved in CNC machining, metalworking, and manufacturing.