ECS Tuning 20mm hubcentric wheel spacers; anodized aluminum. Wheel spacers offset wheels to improve vehicle appearance and handling. These flat discs with center holes and wheel bolt holes fit between wheels and hubs to push the wheels outward. ECS Tuning wheel spacers come in thicknesses from 2-20mm, to widen track, improve cornering, and provide extra room for altered suspension and brake components. Spacers 10mm thick and thicker are hubcentric.