The 80 Piece Router Bit Set by Stark features a 1/4" shank diameter and includes a variety of router bits for different woodworking projects. With a total of 80 pieces in the set, this collection offers a wide range of options for creating precise and detailed cuts in various materials. The set includes bits with a case length and width of 14 inches, providing versatility for a variety of woodworking tasks. Whether you are a professional woodworker or a hobbyist, this set offers the tools needed to enhance your projects.