Yamaha QualityMonel pistonsMonel pistons are resistant to corrosion and are an ideal choice for professional trumpet pistons which must retain precise fit and smooth action over many years.Hammered one-piece bellA one-piece bell has an axial (lengthwise) seam, making it a continuous extension of the instruments material. This results in pure, uniform resonance and superior tone. A hammered, yellow brass bell produces a slightly more intense, yet pure and perfectly-balanced tone with quick response and extra presence due to advanced manufacturing techniques.Hand-lapped pistons and slidesHand-lapping pistons and slides ensures an absolutely perfect fit and seal between the pistons and casing or slide parts. Such a perfect fit helps to achieve smooth air flow and smooth action and improve the response and intonation of the instrument.Pressure-formed tubingPerfectly rounded tubing results in less turbulence and a smoother air flow, thus allowing for an excellent scale and reduced resistance.Laser-fused pluzuma welded bellA high-energy laser fuses the brass together for a virtually seamless bell which allows continuous even vibrations.Unbraced inner outer tuning slideAs with all Yamaha lightweight trumpets, the YTR-6610S has an unbraced tuning slide which makes the trumpet comfortably open with less resistance.One-piece, drawn, gold brass leadpipeThis type of leadpipe offers excellent intonation, response and proper resistance. The step bore design is a medium bore trumpet fitted with a large bore tuning slide. This design allows for smoother air flow with less resistance.Tuning slides for D includedThe first, third, and main tuning slides for the D side are included.