Marching Brass   450L F Marching Mellophone 0.460" (11.7mm) bore 10" (255 mm) bell Trumpet-style with French horn mouthpiece adapter stainless steel pistons Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 466L Bb Marching Euphonium 0.570" (14.48 mm) bore size 11" (280 mm) bell Shoulder model and upright convertible mouthpipe stainless steel pistons Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 550L Bb Marching French Horn 0.469" (11.9 mm) bore 10" (254 mm) bell Trumpet-style with brass bell stainless steel pistons French horn mouthpiece adapter Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 560L Bb Marching Baritone 0.500" (12.70 mm) bore 10" (254 mm) bell Trumpet-style with brass bell stainless steel pistons Adjustable little finger ring Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 380L 3/4 size BBb Marching Tuba 0.661" (16.8 mm) bore 14.4" (366 mm) bell Shoulder model and upright convertible mouthpipe Removable valve section with stainless steel pistons Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 384L BBb Marching Tuba 0.709" (18 mm) bore 15" (381 mm) bell Shoulder model and upright convertible mouthpipe Removable valve section with stainless steel pistons Clear lacquered, nickel or silver plated finish Wood frame case Spec Chart 590L BBb Sousaphone 0.736" (18.69 mm) large bore 26" (660 mm) bell Curved tuba-style 'quad valve' cluster, is tension free and comfortable to facilitate playing of fast passages Removable cluster valve with stainless steel pistons Two sets of tuning bits (45° and 20° ) Clear lacquered or silver plated finish Wood frame case with wheels Spec Chart 594L BBb Sousaphone 0.669" (17 mm) bore 26" (660 mm) bell Removable cluster valve with stainless steel pistons Two sets of tuning bits (45° and 20°) with protective carrying bag Clear lacquered or silver plated finish Wood frame case with wheels Spec Chart 596L BBb Fiberglass Sousaphone 0.669" (17 mm) bore 24" (610 mm) bell Fiberglass body and bell Removable cluster valve with stainless steel pistons Two sets of tuning bits (45° and 20°) with protective carrying bag Clear lacquered or silver plated finish Wood frame case with wheels or gig bag Spec Chart 696L BBb Fiberglass Sousaphone Model 596L with 26”(660mm) brass bell Spec Chart Marching Brass Specifications Marching Instruments Model No. Key Bore Size Bell Size Valve 450L F 0.462" (11.73 mm) 10" (255mm) Trumpet style w/nickel silver plated pistons 466L Bb 0.570" (14.48 mm) 11" (280mm) 3 valves w/nickel silver plated pistons 550L Bb 0.469" (11.91 mm) 10" (254mm) Trumpet style w/nickel silver plated pistons 560L Bb 0.500" (12.70 mm) 10" (254mm) Trumpet style w/nickel silver plated pistons 380L BBb 0.661" (16.80 mm) 14.4" (366 mm) 3 valves w/nickel silver plated pistons 384L BBb 0.709" (18.00 mm) 15" (381 mm) 3 valves w/nickel silver plated pistons 590L BBb 0.736" (18.69 mm) 26" (660 mm) 4 valves w/stainless steel pistons 594L BBb 0.669" (17.00 mm) 26" (660 mm) 3 valves w/nickel silver plated pistons 596L BBb 0.669" (17.00 mm)Fiberglass body 26" (660 mm) Fiberglass 3 valves w/nickel silver plated pistons 696L BBb 0.669" (17.00 mm)Fiberglass body 26" (660 mm) Brass 3 valves w/nickel silver plated pistons     450L 466L 550L 560L 380L 384L 590L 594L 596L 696L         French Horn Alto Horn Baritone Euphonium Tuba top