B&S Model 3170

• Bb-Euphonium
• Bore: 15 mm (0.590")
• Bell diameter: 300 mm (11.81")
• 3 valves
• Stainless steel pistons

B&S Model 3175

• Bb-Euphonium
• Bore: 15 mm (0.590")
• Bell diameter: 300 mm (11.81")
• 4 valves (3+1) compensating
• Stainless steel pistons

B&S Model 3175S

Same as 3175, except silver plated