--- product_id: 320863328 title: "Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle S..." brand: "brock string" price: "€ 30.93" currency: EUR in_stock: true category: "Brock String" url: https://www.desertcart.ie/products/320863328-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle store_origin: IE region: Ireland --- # 3 x 6-ft precision strings Durable nylon/polypropylene build Enhances eye convergence & focus Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle S... **Brand:** brock string **Price:** € 30.93 **Availability:** ✅ In Stock ## Summary > 👁️‍🗨️ Elevate your focus, dominate your game! ## Quick Answers - **What is this?** Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle S... by brock string - **How much does it cost?** € 30.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/320863328-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle) ## Best For - brock string enthusiasts ## Why This Product - Trusted brock string brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Train Like a Pro, Anywhere:** Simple setup and clear instructions make vision training effortless at home or on the go - • **Built to Last, Built to Perform:** Premium nylon/polypropylene materials ensure durability and consistent use - • **Sharpen Your Aim with Precision:** Three 6-foot strings for versatile, sport-specific eye training - • **Boost Visual Coordination & Focus:** Strengthen eye muscles to gain a competitive edge in sports and daily activities - • **Join the Elite Vision Training Community:** Trusted by shooters and athletes for enhanced front sight focus and convergence ## Overview The Brock String Front Sight Focus Combo Pack includes three durable 6-foot nylon/polypropylene strings designed to improve eye convergence and focus. Ideal for shooters and athletes, this easy-to-use vision training tool strengthens eye muscles, enhances visual coordination, and comes with clear instructions for effective practice at home or in the field. ## Description Shop Brock String Front Sight Focus String Combo Pack, Three 6-Foot, Vision Convergence Training Tool, Great for Shooters, Front Sight Training and More!. Free delivery and returns on all eligible orders. ## Features - ENHANCE CONVERGENCE AND FOCUS: Use the Brock String convergence training tool to strengthen eye muscles, focus, and support visual performance for daily activities and sports - BOOST ATHLETIC PERFORMANCE: The Brock eye string allows precise eye training in sport-specific positions, giving you a competitive edge and enhanced visual coordination - EASY-TO-USE EYE EXERCISE TOOL: Simple setup and short learning curve let you practice convergence and eye focus exercises at home, making vision training convenient for beginners and advanced users - PREMIUM FOCUS STRING WITH BALLS: Crafted with durable string and high-quality beads, this eye muscle strengthening tool ensures long-lasting use and consistent performance for repeated vision exercises - FRONT SIGHT TOOL WITH INSTRUCTIONS INCLUDED: Comes with clear guidance and tips for proper use, ensuring effective training and helping you get the most from your Brock String sessions ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B075881G1K | | Best Sellers Rank | 74,118 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 18 in Archery Sights | | Brand Name | Brock String | | Colour | Multicolor | | Customer Reviews | 4.6 4.6 out of 5 stars (174) | | Grip Material | Nylon or Polypropylene | | Handle Material | Nylon or Polypropylene | | Item Length | 72 Inches | | Item Weight | 0.04 Kilograms | | Manufacturer | Brock String | | Material | Nylon Polypropylene (PP) | | Model Number | 5Q-N5NL-FZO4 | | Number of Items | 3 | | Other Special Features of the Product | Convergence Training | | Part Number | 5Q-N5NL-FZO4 | | Recommended Uses For Product | Vision Training, Eye Exercise | | Target Audience | Adult | | UPC | 860007923098 722512369382 | | Unit Count | 3.0 count | ## Product Details - **Brand:** Brock String - **Material:** Nylon Polypropylene (PP) - **Recommended uses for product:** Vision Training, Eye Exercise - **Special feature:** Convergence Training - **Target audience:** Adult ## Images ![Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle S... - Image 1](https://m.media-amazon.com/images/I/51i-qwxd9HL.jpg) ## Frequently Bought Together - Brock String Front Sight Focus String Combo Pack, Three 6-Foot, Vision Convergence Training Tool, Great for Shooters, Front Sight Training and More! - SADIKALO 6Pcs Eye Exercise Chart - Visual Muscle Relaxation Office Classroom Wall Decor Myopia Dry Eye Office Gifts Waterproof Posters Card Desk Sign for Home School Kids Students Office Coworkers - Brock String - Vision Convergence Training - Convergence Insufficiency Tool - Train Vision, Athletic Performance, and More!, White, 6 foot --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ie/products/320863328-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle](https://www.desertcart.ie/products/320863328-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle) --- *Product available on Desertcart Ireland* *Store origin: IE* *Last updated: 2026-10-17*