Features: 1) Diameter: 0. 050' - 0. 155' / 1. 3mm - 4. 00mm 2) Shapes available: Round, square, star, hexagon, heptagon 3) Package: Loop donut, 1/2lbs donut, 1lbs donut, 3lbs spool, 5lbs spool, 10lbs spool, card head 4) Suitable for most leading trimmers and brush cutters 5) Many colors available: Natural, blue, green, yellow, red, black, white 6) Co-polymer trimmer line for heavy duty cutting Packing: Card head, spool, blister donut Nylon line trimmer, garden tool, lawn trimmer line