1) Material:100% nylon chip
2) Diameter: 1.0mm – 5.00mm
3) Shapes: round, square, trigon, star, hexagon, square twist, ellipse twist, duo power, saw tooth
4) Quality grade: economical, commercial, professional
5) Package: card head,loop donut, 1/2lb donut, 1lb donut, 3lb spool, 5lb spool, 10lb spool,20lb spool
6) Suitable for most leading trimmers and brushcutters