Tuba   378L 3/4 Size BBb Tuba 0.661" (16.8 mm) bore 14.4" (366 mm) bell Rose brass mouthpipe - for greater resistance to corrosion and producing warmer tone color 3 removable top action valves w/nickel plated pistons Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 382L 4/4 size BBb Tuba 0.709" (18 mm) bore 15" (381 mm) bell Rose brass mouthpipe 3 removable top action valves w/nickel plated pistons Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 482L BBb Tuba 709" (18 mm) bore 15" (381 mm) bell Rose brass mouthpipe 4 removable front action valves w/stainless pistons Nickel silver outer tuning slide Clear lacquered, nickel or silver plated Wood frame case w/wheels Spec Chart 582L BBb Professional Concert Tuba Endorser 0.732"~0.788" (18.6~20 mm) bore 17.4" (441 mm) bell Rose brass mouthpipe 4 front action valves w/stainless steel pistons Nickel silver outer tuning slide Clear lacquered, nickel or silver plated finish Wood frame case w/wheels Spec Chart 778L 3/4 Size BBb Rotary Tuba 0.661" (16.8 mm) bore 14.4" (366 mm) bell size Rose brass mouthpipe 4 rotary valves with metal linkage joints Adjustable thumb ring Strap hooks w/flange Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 376L Eb Tuba 0.689" (17.5 mm) bore and 4th valve is with 0.748"(19mm) bore 15" (381 mm) bell Rose brass mouthpipe 3 removable top action and 1 side valve with stainless steel pistons Clear lacquered, nickel or silver plated finish Wood frame case w/wheels Spec Chart 476L CC Tuba 0.732" ~ 0.788" (18.6~20 mm) bore 17.4" (441 mm) bell size Rose brass mouthpipe 4 front action valves w/stainless steel pistons Clear lacquered, nickel or silver plated finish Wood frame case w/wheels Spec Chart 584L CC Tuba 0.732” (18.6 mm) bore 17.4” (441 mm) bell Rose brass mouthpipe 4 front action valves+1 rotary valve Stainless pistons and nickel silver rotor with metal linkage Adjustable thumb lever Clear lacquered or silver plated finish Hard shell case with wheels Spec Chart Tuba Specifications Tubas Model No. Key Bore Size Bell Size Valve Pistons 378L BBb 0.661" (16.8 mm) Rose brass mouthpipe 14.4" (366mm) 3 top action valves w/nickel plated piston 382L BBb 0.709" (18mm) Rose brass mothpipe 15" (381mm) 3 top action valves w/nickel plated pistons 482L BBb 0.709" (18 mm) Rose brass mouthpipe 15" (381 mm) 4 front action valves w/stainless pistons 582L BBb 0.732"~0.788" (18.6~20 mm) Rose brass mouthpipe 17.4" (441mm) 4 front action valves w/stainless pistons 778L BBb 0.661" (16.8mm) Rose brass mouthpipe 14.4" (366 mm) 4 Rotary valves 376L Eb 0.689" (17.5 mm) and 4th valve is with 0.478” (19mm) Rose brass mouthpipe 15" (381 mm) 3 top and 1 side action valve with stainless steel pistons 476L CC 0.732"~ 0.787" (18.6 ~ 20 mm) Rose brass mouthpipe 17.4" (441 mm) 4 front action valves with stainless steel pistons 584L CC 0.732"(18.6 mm) Rose brass mouthpipe 17.4" (441 mm) 4 front action valves +1 rotary valve     378L 382L 482L 582L 778L 376L 476L 584L             French Horn Alto Horn Baritone Horn Euphonium Marching Brass top