A complete set of torque extension bar that provides high speed and great precision for professionals who seek for quick and fast work experience. 10 distinctive color-coded bars offer swift and clear selection of desire torque for the job. Ranging from 65 ft-lb to 150 ft-lb, these highly accurate bars are specifically designed for delivering right amount of torques from powerful impact wrenches to the wheel lug nuts. All 10 pieces of extension bars are nicely placed in a handy and heavy-duty BMC case that allows maximum portability and easy storage.