120 m spool of 400D nylon bowstring serving thread — approx. 1 mm diameter (400D/3 construction), breaking strength 34 lbs. Designed for reinforcing bowstrings and securing small accessories while resisting fraying and wear. Key benefits Reliable reinforcement: Use as center or limb serving to protect and strengthen bowstrings; maintains integrity under repeated tension. Secure accessory attachment: Smooth, consistent diameter makes it easy to attach peepers, nock points, and other small fittings without slippage. Durable construction: density 400D/3 nylon resists fraying and holds up through repeated wrapping and use. Easy to work with: Smooth texture and uniform thickness allow quick, neat wrapping and tight fits for professional looking results. Versatile spool size: 120 m gives ample length for multiple repairs or projects. Specifications Material: 400D nylon Construction: 400D/3, density Length: 120 m per spool Diameter: approx. 1 mm Breaking strength: 34 lbs Typical applications Archery: Reinforce bowstrings, wrap center serving, and secure peep sights and nock points. Kite and hobby use: or reinforce kite bridles and strings that need a thin, strong line. Shoemaking and small repairs: Use as shoemaker's cord or for smallscale projects and crafts that require strong, thin cordage. Why choose this serving thread Maintains strength and shape under tension thanks to the dense 400D/3 construction. Smooth, consistent diameter reduces slippage and speeds up wrapping and finishing. Long spool length and reliable breaking strength make it practical for both field repairs and workshop projects.