Suitable Material: Nylon, Resin, Acrylonitrile Butadiene Styrene, Acrylic, PVC, MDF Wood, hardwood and other three-dimensional carving, surface machining, etc. Chip Removal: The CNC design profile milling cutter is the oversized spiral and discharge chip, which prevents the knife from sticking, thereby increasing the production efficiency. Perfect Cutting: The profile milling cutter can cut smoothly, make the shot non-stick, non-black, and increase the speed. High Quality and Durable: These engraving bits have sufficient bending strength and wear resistance for precision engraving of various materials. Enough to Replace: Includes 12 pieces of three sizes of cutters for durable use. Features: 1/8" Double Flute Tungsten Carbide CNC Router Bit: Shank Diameter (SD): 3.175mm approx. Cutting Edge Diameter (CED): 3.175 mm approx. Cutting Edge Length (CEL): 17 mm approx. Item Length: 38.5mm Made of solid carbide Ideal for 3D relief carving, cutting, engraving, grooving, milling, etc. Single