This model trombone has been the industry standard when it comes to beginner trombones.This Yamaha trombone YSL 354 has just been serviced at an instrument repair shop and is ready to play! This instrument features an Amato water key on the slide. The slide action is nice and smooth, and the Amato water key helps with a more continuous resonance for the instrument.Instruments may need minor adjustment due to shipping, but will be packed firmly in the case.