Features: ▶High-quality, fast-cutting burrs for shaping, grooving, slotting and hollowing. ▶User-friendly design and easy insertion process for longer life, incredibly easy to use. ▶Sharp-edged single flute to make cutting smooth and efficient and sharp-cut spiral cutting edge. ▶Well-suited for detailed work, such as building and sanding dollhouse furniture, model trains, or miniature buildings and planes. Specification: Type: Rotary Bit Burrs Set Material: High Speed Steel Shank Diameter: 1/8 inch (3.1mm) Round Shank Length: 39mm / 1.53 inch Package Include: 10 * Carbide Engraving Bits 10 * Wood Router Bits Notes: 1. Size for manual measurement, there may be a 1 to 3 mm error, belongs to the normal phenomenon. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 【Carpentry Router Bits】The router is made of high speed steel, you can use for a long time, the handle diameter is 1/8 (3mm), length:1.57 (40mm). There are 10 different types for your choice, it's suitable for grinding, polishing, shaping and burnishing wood. 【Rotary Burr Set】The rotary burrs are made of high speed steel, the rotary burr is 1.53 inch/ 39 mm in length, the handle diameter of it is 1/8 inch/ 3.1 mm, there are also 10 different types for you to apply for wood, aluminum and carving. 【Great Design】It features large capacity chip groove, and spiral cutting edge sharp, greatly enhance the efficiency and quality of products. 20 Different Bits fits Dremel Tool, meet most of your drilling needs. 【Easy to Use】User-friendly design and easy insertion process for longer life, incredibly easy to use. Accessories for fine detail work on Wood, 1/8 carbide engraving bits single flute replacements for your CNC machinery. 【Practical Tools】With these tools, you can DIY your work at anytime and you just need to put them in your tool bag, they will help you deal with many kinds of work, such as woodworking, engraving, trimming, carving. UPC 742089214250 Brand Name Rongon Shank Type Straight Unit Count 1.0 Count Item Weight 55 Grams Finish Types Titanium Manufacturer Rongon Material Type HSS High Speed Steel Tool Flute Type Spiral Number of Flutes 1 Number of Pieces 20 Minimum Bore Diameter 0.75 Inches Surface Recommendation Wood,Steel