This set includes (2) Desert Extrusion Cyclone CY105S3 .105" x690 Commercial Line Red commercial quality trimmer line. Desert Extrusion Cyclone CY105S3 .105" x690 Commercial Line Red, Trimmer Line is scientifically designed with a 6-bladed shape that provides better cutting power. The line is made with a special nylon copolymer formulation that allows the line to last longer. This commercial quality trimmer line has a diameter of .105 inches and is 690 feet long and is color coded by its diameter size. This CY105S3 trimmer line is compatible with any string trimmer that accepts.105" line diameter. Made in the U.S.A