Universal 5/16" shank,can be used in any router that has a 8mm quarter 5/16" carbide shank router bits, sealed bearings for smooth rotation and accurate cuts.***High-grade tungsten carbide blades- TCT Cutters can be re-sharpened,sealed bearings for smooth rotation and accurate cuts. With antioxidant coating on the blade head, these bits are durable, and have a long service life.***Easy to identify and organize. Starter router bit set is labeled with the bit type along with a coordinating image enclosed in a wooden case, so it's easy for you to pick the one you need. With the storage box, it's convenient to carry these tools anywhere.***Wide application. Perfect to your woodworking projects for the edging, trimming, veining, boring tenon and grooving, professional DIY tools for carpenters and hobbyists.***Suitable for chipboard, MDF board hardwood & softwood; can be used on CNC and other automatic routers as well as hand-held and table-mounted portable routers.***This is a great set for the woodworker just starting out or anyone needing a commercial quality set of bits Comes with a wooden case for easy storage and organization. Perfect for edging, trimming, veining and grooving in all woodworking projects for both professional carpenters and hobbyists.