These "Set of 4"  Chrome "Bolt-On" 16 inch wheel covers are made of the Most Durable, Chrome Plated ABS Construction Available (Factory Quality). These Chrome "Bolt-On" 16 inch wheel covers are triple chrome plated for a brilliant mirror shine. The Only Chrome Wheel Covers that Match Your Factory Chrome PERFECTLY! The GM Chrome "Bolt-On" 16 inch wheel covers Perfectly Fit over your existing 16 inch Factory Steel Wheels (Bolts onto existing lugs). Just remove The Old Grey Wheel Covers with a Lug Nut Wrench and use the same wrench to put the New Chrome Covers on. The "set of 4" 16 inch Chrome Wheel Covers Bolt onto your Wheels existing Lug Nuts, so there is NO WHEEL REMOVAL!!! Your GM Chrome "Bolt-On" wheel covers will literally install in less than 10 Minutes of your time!!! Once installed, the Chrome Wheels Remain VERY secure. Get the look and Appearance of true factory Chrome Wheels for a fraction of the price!