Thomann Concerto ML Rotary Trumpet, Handmade Bb Trumpet with Rotary Valves, Bore Ø: 11.20 mm, Bell Ø: 137 mm, Brass bell with medium wall thickness, Outer slides and leadpipe from nickel silver, Long water key on main tuning slide, Trigger on the third valve, Conical rotary valves, Minibal ball joints,