Our machine works harder, so you don't have to make sausage has never been fun and easier! The Hakka Sausage Stuffer cylinder tilts back for convenient filling also includes a piston with an air release valve which allows air to escape up and out of the top instead of into the sausage casing. “NEW” Hakka Sausage Stuffer; for home use. Our advanced design will provide years of trouble-free operation.