VIERDWIN V-Groove Chamfer End Mill, 1/4" Shank, 4-Flute Design, 1/4" Cutting Diameter, CNC Router Bit. This end mill is suitable for cutting a variety of materials including aluminum, copper, plastic, and wood, and is widely used for precision chamfering and groove processing. Its V-groove chamfer design ensures precise cutting results and a smooth, burr-free surface on the workpiece. Made from high-quality carbide material, it offers excellent wear resistance and heat resistance, extending the tool's service life. Compatible with various CNC machines, it is an ideal choice for efficient and precise machining.