Features Silver-Plated Brass Body is made from the highest quality brass and finished with a bright silver-plate ensuring fine playability and tonal brilliance Stainless Steel Pistons have remarkably smooth, fast action for improved agility and playability The Nylon Carrying Bag offers protection while maintaining convenient transportation Key of BBb Fiberglass Body Description Product Description The Jupiter JSP1000SB Fiberglass Sousaphone with nylon carrying bag is one of the more sturdy marching instruments currently on the market. The JSP1000SB 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. Fiberglass Body and 26" Bell, .687" bore, removable Silver-Plated front action valve and slide section, weighs 22.4 lbs, Nylon Carrying Bag (KB-88), Commercial Ground Shippable