Two-thread machine for blind stitching double-sided fabrics. Equipped with a built-in motor and a spring-loaded plunger that lowers and allows the needle to enter its natural position. The long arm allows for easy maneuvering of bulky garments. Used for blind stitching various types of thick materials. The top feed method ensures precise and even stitching. The 313 is suitable for joining double-sided fabrics such as the center back, sleeves, sides on reversible coats and jackets made of double-sided fabrics.