General description Carbitool Straight Router Bit with a 20mm diameter and 1/2" shank is designed for general-purpose routing, grooving, and rebating. It features a two-flute design that enhances its performance, making it suitable for various applications, including routing abrasive materials for extended life. Technical specifications Diameter (T): 20mm Length (B): 1 1/2" (38.1mm) Overall length (C): 3 1/4" (82mm) Shank diameter: 12.7mm (1/2") Flute count: 2