Feature:1. Especially suitable for 3D relief and complex 3D carving. Widely used for engraving, drilling, milling, cutting of hardwood, plywood, acrylic, plastic fiber, resin, printed circuit board and other materials2. Ideal for 3D carving. 2‑blade spherical nose spiral drill bit, the spherical nose is used for carving curved surfaces. Easy to remove chips3. Nano blue coating enhances the hardness, thereby prolonging the service life, and making drill bit more durable and wear‑resistant4. Ultra‑fine hard tungsten steel material can ensure its engraving and milling performance. The cutting edge is of sharpness and the surface has no burrs5. Tungsten steel material with high hardness, wear resistance, strength and toughnessSpecification:Item Type: Ballnose CutterMaterial: Tungsten steelColor: Blue coatedTotal Length: Approx. 45mm / 1.8inHandle Diameter: Approx. 3.175mm / 0.1inBlade Length: Approx. 5mm / 0.2inDrill Diameter: Approx. 1.5mm / 0.1inPackage List:1 x Ballnose Cutter