Aeroflow Performance range of racing wheel nuts are designed to keep your wheels on your car, but they will also add some class at the same time. These wheel nuts are designed and constructed to strict engineering quality standards. Made from SCM 440 steel for structural integrity, then hardened and tempered, reaching the depth of hardness needed for their unsurpassed level of safety. They are treated with high corrosion resistance to combatrust in any environment then nickel plated black for lasting beauty. This range of tuner wheel nuts feature a rotating seat known as 'scratch free' which prevents scratching the inner surface of the wheel when torquing up to spec.