This 48-inch tall flat top stack is chrome plated and has a 6-inch to 5-inch inside diameter. It features an expanded/slotted flat top design and is chrome plated for durability. With a length of 48 inches, it fits most makes and models. This product is practical and versatile, offering a reduced inside diameter for improved performance. Its chrome plated finish adds a sleek and stylish touch. Sold individually, this stack is a reliable and functional choice for enhancing the performance of your vehicle.