ITEM NAME:New 110m Fiber Archery Bow String Serving Material Bowstring Protect tool Description: Bow String Serving Thread Small ductility, strong pull, ultra-light and wear-resistant Material: Fiber Type: 300D/3 Thickness: 0.4mm Length: 110 m/120 yard Package Includes: 1 Piece Bow String Serving Thread.Bow String Serving Thread. 1 Piece Bow String Serving Thread. Material: Fiber. Small ductility, strong pull, ultra-light and wear-resistant. People always bought together with.