1. Rail and Stile Router Bit Set with anti-kickback design provides higher stability and less vibration. When using, it should be noted that at least clamp to the 'min insert' line,and the RPM≦18000. Pushing slowly can help you get a smoother and cleaner cut. 2. Rail and stile router bit set with a classic design is a good helper for you to make cabinets and doors, is the most common way to build doors for cabinets and furniture. 3. These router bits are suitable for wood, MDF, particleboard, plywood, compact panels, hardwood floor, oak, acrylic. Do not cut metal and non-wood materials such as: steel, iron, sand, etc. These bits cut shaker rail and stile kitchen cabinet door frames, also can making photo picture frames, drawer and other woodworking. 4. Rail & Stile Router Bit Set with C3 micro-grain tungsten carbide blades, carbide Tipped for clean cutting action; You don't have to waste a lot of time sanding, perfect for woodworking, trimming, grooving, edging, and veining wood projects.