shape: round, square, twist diameter: 1.6mm, 2.0mm, 2.4mm, 3.0mm, 3.5mm SpecificationsTrimmer Line 1.0-5.0mm Round,Square,Star,Heptagon,Hexagon ,Twist. With high quality and competitive price. Best choice.Metric lengths and weights PROFILEROUNDSQUARESTARHEPTAGONSQUARE TWISTELLIPSE TWISTDIAMETERAppr.MT/KG1.3mm/.050inch6626199468289468281.65mm/.065inch4103835855145855142.0mm/. ...