Well-made, well-priced C trumpet. Bore = 11.89mm/ML 0.460" bore. One piece gold brass bell, 124mm diameter. Stainless steel valves, first valve slide U hook, fixed third valve slide ring and nickel silver outer slides. Reverse Lead Pipe, round main tuning slide bend - one piece gold brass bell. Complete with manufacturer's accessories including professional case (hard, vinyl covered exterior, with plush brown interior and extra plush flap to protect instrument), valve oil, weril mouthpiece and lacquer cloth.