Model: TJTR4500 Bore size: 0.465” (11.8mm) Bell diameter: 4.92” (125mm) Bell material: rose brass Finish: lacquer Leadpipe: rose brass 1st valve thumb saddle/ 3rd valve adjustable ring Slides: Cupronickel slides Water keys: x 2 TJ acoustic brace Case: Backpack style case with TJ logo Mouthpiece: Trevor James 7C mouthpiece