The old model number CTR-520T, performance popular trumpet.
11.70 mm(0.460 in) bore.
127 mm(5.000 in) soldered wire rim yellow brass STANDARD/THIN bell.
Yellow brass leadpipe.
Yellow brass inside/nickel-silver outside reversed light weight main tuning slide.
Yellow brass inside/nickel-silver outside tuning slides.
1st valve slide ring.
3rd valve slide fixed finger ring with stop screw.
Deluxe multifunctional carrying bag, 3C mouthpiece, cleaning cloth, cleaning rod, valve oil.
Added parts:
1 square main tuning slide.
3 super thin finger buttons.
3 light weight valve springs.