Nice original trip from a 1 3/4HP United hit & Miss Engine. I believe this fits several variations of the associated and United engines. I think it’ll fit the 2 1/2HP engines and possibly other sizes but please research before purchasing. Nice original condition with no breaks or repairs. Comes with original bolt and Nut. See pictures for absolute best description. Antique Associated United GDD Goose Neck Igniter Trip Hit Miss Engine.