The Roy Benson TB312C is a C tuba designed for students, amateurs, and brass ensembles. It features a brass body with a lacquered finish and a bell diameter of 366 mm. The bore size ranges from 17.5 to 18.5 mm, offering a balanced tone and projection. It includes four front-action stainless steel pistons for smooth operation and a detachable valve section for easier maintenance. The instrument also has an adjustable thumb rest and comes with a lightweight case equipped with backpack straps. With a total weight of approximately 6.8 kg, it combines portability with solid construction.