Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4582326. Hello This is a straight version of a bass serpent however in soprano size. It has been modelled in Catia. The model had been cut to be printed in smaller part. it shoud work with any standart trombone mouthpiece. I will publish an updated version and the printed product once it is finished. Have a nice day Edit 1 : the hole for the mouthpiece is bigger and the full verion has now an integrated mouthpiece now the fit is more sturdy have fun !