Runs Along Templates - The Template Guide for routers runs along templates transferring shapes onto the workpiece. It is indispensable when working with templates and offers a quick-fastening Bayonet lock for rapid tool-free changing. The distance between the guide and the router bit must be taken into consideration when making a template for use with a template guide. This distance is calculated with the following formula: diameter of template guide (K) – diameter of router bit (F))/2. Features and Benefits • Runs Along Templates, With Quick Fastening Lock • Template Guide for routers runs along templates transferring shapes onto the workpiece • Indispensable when working with templates and offers quick-fastening Bayonet lock for rapid tool-free changing Specifications Diameter: 13,00mm