This Jendyk Stud Installer is designed for quickly and safely installing wheel studs at a fraction of the cost of hydraulic stud installers. This installer is much less expensive than hydraulic stud installers used by very large shops. With 3 times more threads than a standard wheel nut, this tool reduces the possibility of distorting threads of stud during installation. This tool allows the force of installation to be distributed over a greater area. Made in U.S.A. from a proprietary heat treated alloy steel with extended life.