The instrument is a Dillon double valve bass trombone. Both triggers operate smoothly without issue. The threads on the caps of the attachments are of good quality. The tuning slides move freely. The slide itself is a 7-8 out of 10There is no lacquer wear as this instrument was wiped down after every use. Also, a cleaning rod and brass saver was used on the slide after every use. This instrument is of solid build quality and would be a wonderful instrument for a student or a tenor player looking to double on a bass. There is on small crease on the bell which is picturedThe bass will come with the original unbranded mouthpiece and a Bach 1 1/2g mouthpiece.