Yamaha's Standard model tenor trombone features many of the qualities of the top pro models. The response is quick, the intonation accurate, and the sound both rich and full. The outer slide is one-piece drawn brass for accurate diameter and better resonance. The inner slide is drawn from chrome-plated nickel-silver for better durability and response. Yamaha's unique slide lock design safely locks the slide in place. Yamaha standard trombones have laser-fused pluzuma welded bells for continuous, even bell vibrations.