Durable Tip Design: Each bit is equipped with a C2 tungsten carbide tip that stays sharp and lasts a long time (Please get the coupon code on the product page when purchasing to get a cheaper price.) Body Design: Fully heat treated shanks and bodies are built to last and the bits can be resharpened. Anti-kickback Design: Each cutter is equipped with an anti-kickback design to prevent over-rotation and extend the life of your router and runs smoother Usage: Perfect for your woodworking projects for edge cutting, trimming, veining, tenon drilling and grooving, professional DIY tools for woodworkers and amateurs Application: Suitable for particle board, MDF board, hardwood and softwood; can be used on CNC and other automatic routers, as well as portable and table-mounted routers. This 15-piece router bit set is designed to help you get the most out of your woodworking projects when cutting wood. Stored in a wooden case for easy storage and transport. Sealed bearings for smooth rotation