5Pcs CNC Router Bits, 2 Flutes Straight V Bits, 0.5mm Tip Tungsten steel Engraving Bits, 4mm 18 inches Shank Blue Coating Sharp Bits for Spring Engraving Tools, End Mills Feature: 1. Made of tungsten steel material, high hardness and high strength, resistance and no rust. 2. The unique mirror friction treatment is used to create a perfect surface effect and reduce the chance of burning and deviation. 3. The perfect choice for carving and carving details, mainly used for wood, MDF, aluminum, acrylic carving, etc. 4. With small size, easy to carry and store, convenient to use and with good performance. 5. Wide range of applications, suitable for spring engraving tools, CNC milling machines, end mills, etc. Specification: Item Type: 2FlutesStraightGroovesVBits Material: Tungsten steel Color: Blue Specification: 4 x 0.5 x 20 Tip: Approx. 0.5mm 0.02in Shank Diameter: Approx. 4mm 0.2in Total Length: Approx. 45 to 50mm 1.8 to 2in Purpose: Embossing lettering hole opening Application: Spring carving tools, CNC milling machines, end mills, etc. Package List: 5 x 2FlutesStraightGroovesVBits