The Jupiter JSP1000/S Qualifier Fiberglass Sousaphone is one of the more sturdy marching instruments currently on the market. The JSP1000/S features a durable white fiberglass body with a 26-inch bell for great projection plus an easily removable valve and slide body for easy maintenance. Features The fiberglass body and bell are designed to reduce weight and enhance playability, allowing musicians to effortlessly create beautiful melodies. Stainless Steel Pistons have remarkably smooth, fast action for improved agility and playability Removable Valve Sections allows for easier, more economical maintenance and repairs