The1602S XO Series Professional Bb Trumpet is designed for optimum performance and a level of customization that professional players are searching for. From the moment you pick this trumpet up to play you feel the craftsmanship and build quality. The one-piece hand-hammered bell gives the trumpet excellent response and tone. Both a rounded and elliptical main tuning slide and regular and light action spring sets are included to adapt the response and feel of the instrument. Featured with the trumpet is the XO trim kit and 2 tuning slides. The trim kit has heavy weight bottom caps, flat finger buttons, heavy or light springs and metal or plastic valve guides. Everything you need to costomise the trumpet to your needs.