CNC File Machine Single Double Pattern 1/8in Shank Burr Bits Cutting Polishing For Metal For Wood For Steel Feature:1. High hardness: carbide end mill, has high hardness, wear resistance and heat resistance, and long service life2. Meet Your Different Work Needs: The package includes rotary files with single and double slot design to meet your different work needs3. Smooth chip removal: The drill bit set file has high working efficiency and smooth chip removal, it is very practical4. Single Slot for Harder Materials: Single slot is suitable for harder materials such as iron, steel, copper, etc., which saves labor5. Double Groove for Soft Materials: Double Groove is suitable for soft materials such as wood, aluminum and plastic, with high performanceSpecification:Item Type: FileMaterial: CarbideSurface Treatment: Single and Double Pattern Ti PlatingProduct Ratio: Carbide FileShank Diameter: Approx. 3mm/0.12inHole Position: Approx. 3mm/0.12inLength: Approx. 38mm/1.5inList Packing:20 x File 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.