<ul><li>Suitable material: Nylon, resin, acrylonitrile butadiene styrene, acrylic, PVC, MDF wood, hardwood and other three-dimensional carving, surface machining, etc.</li><li>Swarf removal: The CNC design profiling cutter is the oversized chip of spiral and discharge, which prevents the knife from sticking, thus increasing the production yield.</li><li>Perfect cutting: The profiling cutter cuts smoothly, makes grit non-sticky, non-black, and increases speed.</li><li>High quality and durable: These engraving bits have bending resistance and toughness. sufficient wear for precision engraving of various materials.</li><li>Enough to replace: Includes 12 cutters in three sizes for long-lasting use.</li></ul> <b>Product Description</b> <b>Features:</b> Tungsten Carbide 0.3cm Double Flute CNC Router Bit: < /p> Shank Diameter (SD): 3.175mm approx. Cutting edge diameter (CED): 3.175mm approx. Cutting edge length (CEL): 17mm approx. Item Length: 38.5mm Made of solid carbide Ideal for 3D relief carving, cutting, engraving, grooving, countersinking, etc. Single-edged cutter (3.175 x 2 x 8 mm): Material : tungsten steel, anti-rust and anti-static Color: see photo Total length: 38.5mm Cutting Edge Length (CEL) - Spline Length: 8 mm Shaft Diameter (SD): 3.175 mm approximately Cutting diameter: 2 mm Single-edged cutter: Material: tungsten steel Color: see photo Total length: 38.5 mm Cutting edge length (CEL): 17mm Stem Diameter (SD): 3.175 mm approx. <b>Contents:</b> 4 0 CNC double flute carbide cutters .3 cm 4 single-edged cutters (3.175 x 2 x 8 mm) 4 single-edged cutters</p >Note: The data is all manual measurement, please allow 1-3cm error; due to the difference in light and display, there would be a certain color difference, please refer to the actual object received.