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 ultra‑light weight.3. Can be made into curved bow string, long bow string and compound bow string.4. 110m / 360.9ft of the total length, 45.5kg / 100.3lb(approx.) of the strength, elongation of 1%.5. With the bowstring material, you can make different kinds of bowstring according to needs.Specification:Condition: 100% Brand NewItem Type: BowstringMaterial: PolyethyleneLength: Approx. 110m / 360.9ftDiameter: Approx. 0.9mm / 0.04inSpool Height: Approx. 11.5cm / 4.53inSpool Base Width: Approx. 3.5cm / 1.38inUpper Spool Width: Approx. 2cm / 0.79in.Package List:1 x Roll of Bowstring