--- product_id: 11624264 title: "Kester solder 44\" Rosin Core #66/44 .8mm 1 lb. Spool" brand: "kester" price: "$127.17" currency: USD in_stock: true reviews_count: 8 category: "Kester" url: https://www.desertcart.us/products/11624264-kester-solder-44-rosin-core-66-44-8mm-1-lb store_origin: US region: United States of America --- # 2.5x2.5x2.25 in 0.8mm Diameter Made in USA Kester solder 44" Rosin Core #66/44 .8mm 1 lb. Spool **Brand:** kester **Price:** $127.17 **Availability:** ✅ In Stock ## Summary > 🔧 Solder Like a Pro: Elevate Your Craft with Kester! ## Quick Answers - **What is this?** Kester solder 44" Rosin Core #66/44 .8mm 1 lb. Spool by kester - **How much does it cost?** $127.17 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/11624264-kester-solder-44-rosin-core-66-44-8mm-1-lb) ## Best For - kester enthusiasts ## Why This Product - Trusted kester brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Thickness:** Perfectly crafted at 0.8mm for optimal performance. - • **Quality Composition:** 60% Tin, 40% Lead for superior conductivity. - • **Reliable Production:** Engineered for consistent results in every application. - • **Certified Excellence:** Meets J-STD-004 standards for professional use. - • **Instant-Action Wetting:** Experience seamless soldering with rapid flux action. ## Overview The Kester Solder 44 Rosin Core #66/44 is a high-quality soldering wire designed for professionals. With a diameter of 0.8mm and a unique rosin core composition, it ensures instant wetting and reliable performance. Manufactured in the USA, this solder meets industry standards, making it an essential tool for any serious technician or hobbyist. ## Description Kester Solder 24-6040-002766/44 Rosin core solder1 lb spool.031 diameter Review: #1 Solder - The very best of Kester's offerings if you're working on audio gear. Review: Great solder and got a spool that's new. - Glad to get a fresh 1 lb spool. Great product, just as good as the old stuff from the sixties and seventies. The info on the spool says: DOM 2024 - 01 - 26 which would be Jan. 26, 2024. This is the Date Of Manufacture or DOM which is very important as the rosin in the solder will dry out after a few years or maybe three. Kester 44, .031 diameter, rosin core flux is the best solder you can buy for small projects and printed circuit boards. Don't buy Lead Free or any other water based types. ## Features - 44 ROSIN Core - SN60PB40 #66/44 series - 8 mm (.031) - 24-6040-0027 ansi-j-std-006-a series ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.9 out of 5 stars 291 Reviews | ## Images ![Kester solder 44" Rosin Core #66/44 .8mm 1 lb. Spool - Image 1](https://m.media-amazon.com/images/I/81DYd7Jw1zL.jpg) ![Kester solder 44" Rosin Core #66/44 .8mm 1 lb. Spool - Image 2](https://m.media-amazon.com/images/I/816DGNHO1EL.jpg) ![Kester solder 44" Rosin Core #66/44 .8mm 1 lb. Spool - Image 3](https://m.media-amazon.com/images/I/81qmlk08XVL.jpg) ![Kester solder 44" Rosin Core #66/44 .8mm 1 lb. Spool - Image 4](https://m.media-amazon.com/images/I/61HXZiLazDL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ #1 Solder *by J***O on May 21, 2025* The very best of Kester's offerings if you're working on audio gear. ### ⭐⭐⭐⭐⭐ Great solder and got a spool that's new. *by D***N on April 11, 2024* Glad to get a fresh 1 lb spool. Great product, just as good as the old stuff from the sixties and seventies. The info on the spool says: DOM 2024 - 01 - 26 which would be Jan. 26, 2024. This is the Date Of Manufacture or DOM which is very important as the rosin in the solder will dry out after a few years or maybe three. Kester 44, .031 diameter, rosin core flux is the best solder you can buy for small projects and printed circuit boards. Don't buy Lead Free or any other water based types. ### ⭐⭐⭐⭐⭐ The best! I'm never settling for cheap solder again *by R***P on March 16, 2024* I've been using cheap generic solder for a while, and I thought my soldering technique was poor because I kept getting cold solder joints and had to use a lot of flux. This stuff flows effortlessly and leaves nice, strong, shiny connections. I did a quick solder job and every solder joint on the PCB and my wire connections looked flawless on the first attempt, I didn't even need additional flux. I threw away all my cheap solder when I was done and I'm strictly using Kester solder from now on. ## Frequently Bought Together - Kester solder 44" Rosin Core #66/44 .8mm 1 lb. Spool - Lesnow solder wick braid 10ft Length Desoldering Wick Braid Remover Tool Solder Sucker 1 piece No-Clean soldering Wick Wire Roll and Disassemble Electrical Components - Thermaltronics TMT-TC-2 Tip Tinner (20g) in 0.8oz Container --- ## 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.us/products/11624264-kester-solder-44-rosin-core-66-44-8mm-1-lb](https://www.desertcart.us/products/11624264-kester-solder-44-rosin-core-66-44-8mm-1-lb) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-11*