Item Type: Router Bit Material: Tungsten Steel + High Speed Steel Purpose: Arc cutting bit Color: Silver + yellow Shank Diameter: 1/4in Cutting Diameter: 3/4in Cutting Depth: 1/2in Bearing Diameter: 3/4in Package List 1 x Router Bit 1 x Storage Box Safety measures such as glasses, ear protection devices, face covers, and gloves must be worn during operation. 1For Arc Cutting: The router bit has ogee groove design, which is often used for arc cutting, and the operation is fast and accurate. 2With 1/4in Shank: The milling cutter bit has a standard 1/4in shank diameter, which is easy to install and use. 3Safe Operation: The router bit has an anti backlash design with bearing on the top, which ensures safe and smooth operation. 4Durable Materials: Made of tungsten steel and high speed steel, high strength and wear resistance, no deformation after long term use. 5Wide Applications: Ideal decorative groove milling cutter for wood based panel doors, molds, sign making and CNC projects.