Carbide Drill Bits Tool: Our carbide bit is specifically designed for sign-making applications to prevent peaks in routed letters. This router carving bit is recommended for use with a plunge router. The router sign-making bits are carbide tipped with ¼” shanks. Precision Cut: These engraving tool bits make clean and accurate cuts on wood, smooth with no burns where it will be your ideal choice for woodworking. The router letter tools work great to make the size of cuts used for producing the letter signs Sturdy Quality: Our 1/4 carbide drill bit is resistant to abrasion, making it better for drilling hard surfaces. These inexpensive router templates for woodworking jigs make the woodworker’s job goof-proof. Widely Used: The carbide bits are suitable for chamfering of edge and corner, slotting, and other engraving jobs. Our sign making router bits fit all types of wood material, such as MDF, hardwood, softwood, and particleboard. Package Includes: These sign making tools include (1) Signmaking Carbide Router Bit. The diameter of the groove router bit measures 3/16”, the Height is 5/16”, and the Shank of ¼”. UPC 733175529501 Cut Type Carbide-Tipped Cut Size Name 3/16 x 5/16 Brand Name ROCKLER Unit Count 1 Count Part Number 52950 Manufacturer Rockler Item Diameter 0.19 Inches Material Type Carbide Cutting Diameter 0.19 Inches Number of Flutes 1