Oneway Grinding Wheel Balancing System, 5/8 in. Grinding wheels are highly sensitive to vibration due to their mass and speed, making it essential to balance them, especially with faster grinders. Properly balanced wheels last longer, deliver a superior finish on edge tools and projects, reduce wear on the grinder, and operate more quietly. The Oneway Balancing System is easy to set up and use, allowing you to balance your grinding wheels quickly and effectively for life. This system compensates for out-of-round wheels, non-centered arbor holes, variations in wheel density, and side-to-side thickness differences. Designed for grinders with a 5/8" arbor, it requires grinding wheels to have a 1" diameter hole once bushings are removed. The kit includes one right and one left hand balance flange, a balancing base, spacer washers, balancing nuts, washers, screws, and complete instructions, enabling you to balance two wheels with ease. Model Number: 2272