Charcoal colored carbon fiber is one of the most popular materials used in manufacturing today because of its strength and attractive looks. Proform's new Carbon-style engine dress-up products are stamped steel parts with a carbon fiber film adhered to the exterior surface giving the parts that look customers crave at a reasonable price with the strength of steel. This product includes a black Bowtie center nut, and all the necessary mounting hardware. Product Features:Center Nut Style Air CleanerCarbon-Style Finish14-inch DiameterBowtie Center Nut, Black w/ Red Outline IncludedFits 5-1/8 -inch & 4-7/32 -inch Carb Necks