204-370 special sewing machine #7204 extra heavy duty, triple feed, barrel-shuttle lockstitch sewing machine is great for sewing extra heavy weight materials using extremely thick thread. This machine is interchangeable with Durkopp Adler 204-370, widely used in manufacturing of manufacturing of upholstery, automotive, technical textiles & leather goods, for example polyester lifting slings & cargo lashing strap (Ratchet Tie Down), saddles, sails, parachutes, tents, tarps, covers, awnings, buffing wheels, safety belts & harness, military belts and industrial safety products.