General description The Valiant 45 Degree Lock Miter Router Bit Set is the most complete job tool set for your hardwood collection. This versatile set includes a tongue bit, a groove bit, and a 45 lock miter bit, providing everything you need for your woodworking projects. Technical specifications Bit types: Tongue bit, groove bit, 45 degree lock miter bit Shank diameter: 1/4'' (6.35mm) Material: Hardened steel body Coating: Teflon for heat and construction resistance Features: Anti-kickback design Usage This router bit set is suitable for a variety of materials, including wood, MDF, chipboard, and plywood compact panels. However, it is important to avoid cutting ferrous metals and other materials such as steel and iron.