Material: The cutter is made of premium C3 micro-grain carbide, industrial grade router bits; Teflon coated heat and heat resistant, anti-kickback and CNC balanced design Router Size: Bearing Diameter: 6mm Shank, Radius: 3.17mm, 3.96 mm, 4.76mm, 6.35mm Features--- Chamfer bits are mainly used for edging, these bits can also be used to create miter joints of different angles. Excellent for combination plunge cutting and pattern/template routing. And it can be used without the bearing like a standard straight bit Application: Suitable for wooden door frames, wooden window frames, cabinet frames. High abrasion resistance, high precision grinding technology, smoother chip removal Package Contents: 4 x 6mm Round Shank Drill Bits Features: 1. Excellent for combination plunge cutting and pattern/pattern routing. 2. Allows the jig to be positioned on top of the workpiece. 3. In a router table, the template will be placed under the workpiece. 4. It can be used without the bearing like a standard straight bit. 5. For better visibility of the work piece, please use the flush router bit in a portable router. Contents: 4 round router bits of 6mm.