Feature 1PERFECT CUTTING: Router bit set has sharpness cutting edge, milling, hole and plate edge with clean, neat and burr free surfaces. 2HIGH WORKING EFFICIENCY: Router bits have good milling and cutting performance, excellent cutting effect to ensure high working efficiency. 3TUNGSTEN STEEL MATERIAL: Router bits are made of tungsten steel, super hard and wear resistant, strong enough to resist breakage and ensure longer use. 4WIDE APPLICATION: Spiral router bits are suitable for PCB, CNC, carbon fiber, hardwood, mold, plastic fiber, printed circuit board and other accuracy parts processing, engraving, cutting, carving, milling, boring, milling slot, slotting. 5SPIRAL DESIGN: Spiral router bits adopt spiral design for fast chip removal speed and leave an unobstructed pathway. Item Type: Nano Blue Coat End Mill CNC Router BitsMaterial: Tungsten SteelShank Diameter: 1/8 inch Package List 10 x CNC Router Bits1 x Storage Box