AccuWheel ACHR74-5710 Wheel Hub Centric Rings (74.10mm OD to 57.10mm ID) - Pack of 4 pcs Hub Ring Inner Diameter (Vehicle Hub Size): 57.10mm Hub Ring Outer Diameter (Wheel Bore Size): 74.10mm Made out of High Quality Poly Carbon Plastic. They will not corrode or melt in a regular condition Designed to Eliminate Vibrations caused by Custom Wheels not centering correctly onto vehicle's hub Please see Product Description section below for more Vehicle Compatibility