1)12years of production experience 2)material:100% nylon 3)offer OEM service 4)Suitable for most ... the professional landscaper.2. A quality nylon monofilament with premium raw material.3.packing with card head,spool,double blister,etc4.DIA ... ,Various shapes,star,round, square,hexagon,trigon,twist,6.Commercial grade trimmer line. Nylon Trimmer Line