The most popular shapes you'll find of tungsten carbide router bits with a 5/16" shank. Includes wooden case. You will enjoy adding this set to your work shop. You will enjoy them even more when you use them. 6 Popular pieces in set Includes wooden box for storage 6 Shapes - router diagram on box - including diameter, radius and angle where applicable Made of sharp tungsten carbide Pre-mounted on 5/16" shanks