The Hornady Neck Turn Tool saves handloaders time and effort at the workbench. Features: Designed for use on a wide variety of case lengths, the Hornady neck turn tool allows for the use of a drill (not included) to make neck turning faster and easier, while providing superior consistency and surface finish An adjustment knob enables the user to choose detents for 0.0005 inches adjustment increments, or no detents for infinite adjustment The Hornady neck turn tool is a winning solution for precision handloaders who want to maximize accuracy