General description This 17-piece Forstner drill bit set is designed for creating flat-bottomed holes, making it ideal for installing concealed hinges and various woodworking projects. The bits can effectively drill through softwood, medium hardwood, chipboard, and MDF. Technical specifications Number of pieces: 17 Bit sizes: 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 28mm, 30mm, 32mm, 35mm, 40mm Material: Hardened and tempered tungsten carbide Chuck compatibility: 10mm or 13mm Compatibility and accessories Compatible with standard drills featuring 10mm or 13mm chucks Includes a wooden storage box for organization and protection Installation Insert the desired drill bit into your drill's chuck and tighten securely Select the appropriate bit size for your project Ensure the drill is set to a suitable speed for the material being drilled Usage Mark the drilling location on the workpiece Align the drill bit with the mark and apply steady pressure Drill at a