Available in beautiful chrome plated, gold zinc and a variety of colors. Single and dual diaphragm styles available in 7", 8", 9" and 11" diameters fit virtually all hot rods, customs and muscle cars. Includes 3/8"-16 mounting studs and nuts where applicable. Works with many stock mounting brackets and with Tuff Stuff bracket kits. Vacuum tested to ensure reliability. Power Brake Booster. Universal. 7 inch. Dual Diaphragm. Incl. 3/8 inch-16 Mtg. Studs And Nuts. Fits Hot Rods/Customs/Muscle Cars. Chrome.