Set of Gears for SausageMaker made 5 lb. Stuffer

The set of gears were well made of steel. Unfortunately I don't have any information on the stuffer that I have. It belonged to my dad. The gears were plastic on polyurethane, and some teeth were chipping. I tried to call to get some info on , but only could chat. I purchased hoping that I could use them. They were close but wrong. I am trying to return but couldn't contact for returning. My mistake. Thank you.