" Durable Tip Design: Each router bit is constructed with a C2 tungsten carbide tip that stays sharp and lasts a long time (Please get the promo code on the product page when you purchase to get a more favorable price.) Body Design: Fully heat-treated shanks and bodies are designed for durability and the bits can be resharpened Anti-Kickback Design: Each router bit features an anti-kickback design to prevent overfeeding and help your router last longer and run smoother Usage: Perfect for your woodworking projects for edging, trimming, veining, boring tenon and grooving, professional DIY tools for woodworkers and hobbyists Application: Suitable for particle board, MDF board, hardwoods and softwoods; can be used on CNC routers and other automatic routers, as well as handheld and portable routers table mounted This 15 piece router bit set is designed to help you get the most out of your wood cutting projects. Stored in a wooden case for easy storage and transportation. Sealed bearings