Feature:1. Made of 1600 ultra high molecular weight polyethylene fiber with strong toughness.2. Characterized by low ductility, strong tensile strength, wear resistance and ultralight weight.3. Can be made into curved bow string, long bow string and compound bow string.4. 110m or 360.9ft of the total length, 45.5kg or 100.3lb(approx.) of the strength, elongation of 1 percent .5. With the bowstring material, you can make different kinds of bowstring according to needs.Specification:Condition: 100 percent Brand NewItem Type: BowstringMaterial: PolyethyleneLength: Approx. 110m or 360.9ftDiameter: Approx. 0.9mm or 0.04inSpool Height: Approx. 11.5cm or 4.53inSpool Base Width: Approx. 3.5cm or 1.38inUpper Spool Width: Approx. 2cm or 0.79in.Package List:1 x Roll of Bowstring