{"product_id":"2692485-spirit-river-ultra-thread","title":"Ultra Thread","description":"The Ultra Thread by Spirit River is a go-to choice for fly tyers seeking a thread that balances a slim profile with reliable strength. Its unique multifilament nylon construction is engineered to lay flat, preventing unwanted bulk and allowing for precise, clean wraps on the hook shank. This makes it ideal for everything from delicate dry flies to robust streamers. The lightly waxed finish ensures smooth handling and aids in securing materials, making it a versatile workhorse for various tying techniques.## Features* Multifilament nylon construction designed to lay flat for minimal bulk.* Lightly waxed finish assists in securing materials and smooth handling.* Unbonded thread ideal for split-thread techniques and dubbing loops.* Spools are designed for smooth rotation on standard bobbins.## Specs* Available Deniers: 70D, 140D, 210D* Spool Length: 100 yards* Material: Nylon* Breaking Strength (approx.): 70D ~1 lb, 140D ~2 lb* Recommended Use:* 70D: Size 14 and smaller flies, midges, nymphs, delicate patterns.* 140D: General-purpose, sizes 6–14, replaces floss on smaller flies.* 210D: Streamers, saltwater flies, spinning hair on bass flies.","brand":"Spirit River","offers":[{"title":"black \/ 70","offer_id":53595905655095,"sku":null,"price":2.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0281\/5806\/6774\/files\/lcly-6bb5a2e8a6e4b1f268283f3695e2051d.jpg?v=1794395538","url":"https:\/\/finfeather.com\/products\/2692485-spirit-river-ultra-thread","provider":"Fin \u0026 Feather","version":"1.0","type":"link"}