Feature:1. Especially suitable for 3D relief and complex 3D carving. Used for engraving, drilling, milling, cutting of hardwood, plywood, acrylic, plastic fiber, resin, printed circuit board and other materials2. 2blade spherical nose spiral drill bit, the spherical nose is used for carving curved surfaces and easy to remove chips3. Come with nano blue coating, enhances the hardness, thereby prolonging the service life, and the drill bit is more durable and wearresistant4. The surface has no burrs, cutting edge is of sharpness. Ultrafine hard tungsten steel material can ensure its engraving and milling performance5. Tungsten steel come with high hardness, wear resistance, strength and toughnessSpecification:Item Type: Ballnose CutterMaterial: Tungsten steelColor: Blue coatedTotal Length: Approx. 40mm or 1.6inHandle Diameter: Approx. 3.175mm or 0.1inBlade Length: Approx. 8mm or 0.3inDrill Diameter: Approx. 2.5mm or 0.1in.Package List:1 x Ballnose Cutter Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.