The Bach 170S43GYR Professional Bb Trumpet features a focused and character-filled sound with its 0.459-inch bore. The main tuning slide offers the perfect level of breath resistance. The 2-piece, 43 bell gives you a bright, open sound that blends in with ensembles of all kinds. The trumpet also features a machined valve section, supplying you with extra durability, spectacular agility, and ultra-smooth response. Corrosion-resistant nickel silver slides provide reliable movement for tuning and cleaning.