Bag Closing Thread - Size 12/4Ply White 8 oz. cones - Case Quantity. Sewing Thread comes 32 cones per case. cones - 12/4 polyester sewing thread in an 8 oz. size cone. High quality, smooth running sewing thread - compare to Fischbein thread. For use with your Newlong portable bag closer, Fischbein portable bag closer or any other portable bag closer.