Hitachi 746580 .155-Inch 250-Feet Trimmer Line Spool, Black Specially designed commercial-grade copolymer trimmer line and reduces noise by up to 50-percent .155-inch line diameter, 700-feet of line Designed for professionals 3-pound spool Comes with a 30-day limited warranty Specially designed commercial-grade copolymer trimmer line reduces noise by up to 50-percent .155-Inch line diameter, 700-Feet of line Designed for professionals 3-Pound spool Comes with a 30-day limited warranty