Product Features: Made from high quality high speed steel for long life and exceptionally precise cuts the first time, saving you energy and stress. A valuable addition to any woodworker's rotary tool, suitable for most rotary tools including DREMEL, Craftsman, Chicago and more. Suitable for most woods, made from high quality carbide for a precise and easy cutting experience. 20 pieces of the most commonly used types of cutters, including straight, trim, V-groove, beading, cove, slot cutter and more to meet your different needs. Ideal for all types of detail work. Capable of engraving on a wide range of materials including: wood, ABS, acrylic, PVC, plastic, etc. Suitable for detailed work, such as building and sanding dollhouse furniture, model trains or model buildings and airplanes. User-friendly design and easy insertion process for longer life, incredibly easy to use. Accessories for precision work on wood, 1/8 & quot; carbide engraving bits single flute replacements for your CNC machines. Product specifications: Material: high speed steel (HSS) Shaft: 3.17mm Package includes: 1 set of 10 carbide engraving bits 1 set of 10 wood router bits made of high quality high speed steel for a long service life life and exceptionally precise cuts the first time, saving you energy and stress. 20 pieces of the most commonly used cutter types, including straight, trim, V-groove, beading, cove, grooving cutter and more to meet your different needs. A valuable addition to any woodworker's rotary tool, suitable for most rotary tools