1 Improve Work Efficiency: Good quality tungsten carbide tip cutting edge, bring sharper cutting, reducing burrs and improving work efficiency 2 Widely Used In Milling Machines: Widely used in CNC and other automatic milling machines, handheld and desktop portable milling machines 3 For Various Materials: Suitable for cutting acrylic, plastic, carbon fiber, particle board, veneer, medium density fiberboard, PCB board, etc. 4 Heat Resistant PTFE Coating: The main body is made of cemented carbide, and the surface of the drill bit is coated with a heat resistant PTFE coating, which has high hardness, wear resistance and durability 5 1/4in Shank Diameter: Shank diameter is 1/4in, cutting diameter contain 1/4, 5/16, 3/8, and 1/2in, convenient for you to use

What's in the box
4 x V Groove Router Bit Set