Feature:1. It is made of 1600D ultrahigh molecular polyethylene fiber with strong toughness.2. It has low ductility, strong tensile force, wear resistance and super light weight.3. Can be made into recurve bowstring, long bowstring and compound bowstring.4. The total length is about 360 feet/110 meters, the strength is 45.5 kg, and the elongation is 1%5. There are 4 different color combinations to choose from, you can choose your favorite.Specification:Condition:100% Brand New Item Type: Bow String Serving ThreadMaterial: UPE1600D Single Strand Length: Approx. 110m / 4330.7inSingle Strand Diameter of String Material: Approx. 0.9mm / 0.04inSpool Height: Approx. 11.5cm / 4.5inWidth of Spool Base: Approx. 3.5cm / 1.4inWidth of Upper Spool: Approx. 2cm/ 0.8in.Package List:1 xBow String Serving Thread