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Every product is sourced, crafted, and shipped from within the United States. No exceptions.
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Shatterproof Archery began with bowstrings offered by Kramer Ammons and grew with the help of his brother Kazden Ammons, who now owns the company. Based in Colorado Springs, Colorado, the business has an Etsy shop dating to 2017; its formal founding year has not been verified. The team aims to help more people enjoy archery through practical gear and education. Its published values emphasize simplicity, integrity, hospitality and perseverance. A small family business grew from bowstring orders and bow-building videos into a wider traditional archery range.
A B55 Flemish twist string is offered with regular loops or served Invincible loops. The supplier positions B55 for traditional and vintage equipment, but each bow's required string specifications must still be checked.
Match the bowstring to the bow manufacturer's requirements before selecting a material or length. A bow's AMO length and the actual length of its string are different measurements. Copy the required specification from the bow documentation or have an experienced technician check the existing setup. General subtraction rules can be a starting reference, but they are not a substitute for the correct specification for your model.
Low-stretch fibers are not suitable for every bow. Vintage, wood and primitive equipment may require a different material from a modern reinforced bow. Check the permitted fiber, finished length, loop dimensions, serving diameter and arrow-nock fit together. A string that fits over the limb tips is not automatically suitable for the bow. Descriptions of speed or smoothness are comparative supplier statements, not a measured performance guarantee for your equipment.
For a custom order, record the build requirements before payment: actual string length, fiber, loop dimensions, colors, center-serving requirements and any silencers. A regular-versus-served-loop selector does not capture all of these details. Confirm how those instructions will reach the maker through this store. After installation, follow the bow manufacturer's setup process and have brace height, loop seating and nock fit checked before shooting.
Standard bottom loop 1.25 inches and top 1.75 inches. Supplier specifies .020-inch Polygrip serving; custom changes require confirmation.
Select the option that matches the intended setup. Photos may show multiple colors, extra accessories or a completed project to illustrate use; only the selected package is supplied. Confirm missing measurements or specifications before ordering.
B55 fiber; Polygrip serving; wax.
Material names describe the identified construction. They do not by themselves establish component origin, a certification or compatibility with every bow or accessory.
Inspect strands, loops and serving before every session. Follow the bow and string maker’s instructions for waxing, twist adjustment and replacement. Do not shoot with damaged strands, loose serving or uncertain loop seating. Store spare strings so they stay organized and retain their build specification. A wax coating or reinforced loop does not make a string immune to wear.
Actual length, colors and nock fit require a customer-input workflow not present in imported variants. Do not promise compatibility with every vintage bow.
The supplier identifies this finished product as made in the United States through its product text, product-gallery USA claim, or documented in-house tab production. This statement concerns finished-product manufacture; it does not establish that every fiber, hide, wood component or other input was sourced domestically.
For B55 Custom Flemish Twist Bowstring – Regular or Served Loops: The supplier’s general shipping policy states handling under three days for products other than pre-order bows. The supplier estimates US transit at 3–5 business days and international delivery at 10–15 days; estimates are not guaranteed. Its policy calculates rates at checkout. Product pages advertise free US shipping over $99 while the current banner says $200+. BuyAmerican/Collective rates, threshold, dispatch schedule and destination eligibility require confirmation; no supplier retail shipping offer is promised for this purchase.
For B55 Custom Flemish Twist Bowstring – Regular or Served Loops: the supplier’s own retail policy allows returns/refunds within 30 days of receipt and says it pays return shipping. It also offers no-charge repair or replacement for defective/broken products for the product lifetime. Confirm eligibility and claim handling for BuyAmerican/Collective orders before publishing these benefits as terms of this purchase. Contact BuyAmerican for instructions before sending an item back; supplier retail promises are recorded here as evidence, not automatically extended marketplace guarantees.
Compare outdoor recreation equipment and hunting accessories. For local instruction, use the USA Archery club directory.
Every product is sourced, crafted, and shipped from within the United States. No exceptions.

Our supply chain never leaves the country. No surprise costs passed on to you.
Every purchase puts money directly into the hands of American workers and family-run shops.