... of all sorts of fill bags, e.g. burlap, jute, woven poly, cotton, plastic and paper with single needle single thread ... could replaceable with any single needle single thread portable bag closer sewing machine like Fischbein F-series, Newlong NP-7A, Siruba AA series ... , Yaohan N-series, F-series, GK1800, NP-7K portable bag closer ...