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. 3in DIAMETER. FITS 1.22in HOLE. Product Features:Push-In Style2.50-in. TallNo Logos On TopPush-In Style3-in. Diameter