---
product_id: 744777393
title: "Kester 44 Rosin Core Solder 63/37 .020 1 lb. Spool by Kester"
brand: "kester"
price: "€ 8579.16"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/744777393-kester-44-rosin-core-solder-63-37-020-1-lb
store_origin: PT
region: Portugal
---

# Leaves bright, shiny joints for professional finishes High-activity rosin core flux ensures superior solder flow 63/37 Sn-Pb alloy ratio for optimal conductivity Kester 44 Rosin Core Solder 63/37 .020 1 lb. Spool by Kester

**Brand:** kester
**Price:** € 8579.16
**Availability:** ✅ In Stock

## Summary

> ⚡ Solder like a pro—shine bright, connect right!

## Quick Answers

- **What is this?** Kester 44 Rosin Core Solder 63/37 .020 1 lb. Spool by Kester by kester
- **How much does it cost?** € 8579.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/744777393-kester-44-rosin-core-solder-63-37-020-1-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

- • **Generous 1 lb Spool:** Ample supply for continuous professional projects
- • **Precision Alloy Blend:** 63/37 tin-lead ratio balances strength and conductivity
- • **High-Activity Rosin Core:** Ensures fast, clean soldering on diverse metallizations
- • **Trusted Industry Standard:** Decades of proven reliability in electronics assembly
- • **Brilliant Finish Every Time:** Bright, shiny joints that signal quality craftsmanship

## Overview

Kester 44 Rosin Core Solder 63/37 .020 gauge on a 1 lb spool delivers industry-trusted performance with a high-activity flux core that ensures excellent solderability and bright, reliable joints for professional electronics assembly.

## Description

[Parallel Import / Brand New] This product is imported from the USA. Same day shipping from  warehouse. Brand new and unused item. There may be some scratches on the outer box during transportation and a custom inspection for the product. ◆Parallel import goods does not have a manufacturer warranty, but in the event that there is a defective or other defects, it complies with  regulations and will be exchanged for 90 days after purchase.

## Features

- Industry standard for decades
- Excellent solderability to a wide variety of metallizations
- High activity rosin core formulation
- Leaves bright/shiny solder joints after reflow
- Standard Core 66 (3.3% flux)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Kester |
| Model Number | 24-6337-0010 |
| Product Dimensions | 6.35 x 6.35 x 5.72 cm; 453.59 g |
| Are Batteries Included | No |
| Item Weight | 454 g |

## Images

![Kester 44 Rosin Core Solder 63/37 .020 1 lb. Spool by Kester - Image 1](https://m.media-amazon.com/images/I/81-S5dTsxpL.jpg)

## Questions & Answers

**Q: Would this work well to solder switches to a PCB on a mechanical keyboard?**
A: Yes, this is excellent solder for electrical applications. However, keep in mind this is a large roll that is a lot more then you would need if you are only doing one keyboard. I work on home electronics all the time and still l have a roll I bought at least 3 years ago that I use almost weekly. If you only need a small amount I would recommend you go to sparkfun.com they sell small quantities of solder for small jobs, it may not be Kester brand but it is good solder for your job.

**Q: Is this a multicore solder?**
A: All Kester Solder products are single core.

**Q: The diameter of this solder is less than 1/32?**
A: 1/32" is 0.031", so yes, even if it actually measures out to .022" it is smaller than 1/32"
This product is available in 0.031" if you prefer a thicker solder.

**Q: Does the Kester 44 solder have a shelf life or expire in x number of years?**
A: The jist: it lasts forever in a dry, non corrosive environment. The expiration date on the box is for the manufacturers warranty. Here is the document from Kester's website explaining:

http://www.kester.com/Portals/0/Documents/Knowledge%20Base/Kester%20Shelf%20Life%20Policies.pdf?ver=2016-09-13-140726-910

## Frequently Bought Together

- Kester 24-6337-0010 44 Rosin Core Solder 63/37 .020 1 lb. Spool
- Thermaltronics TMT-TC-2 Tip Tinner (20g) in 0.8oz Container
- SRA Solder 135 Rosin Paste Soldering Flux For Electronics, No Clean Flux Made for Lead and Lead-Free Solder Circuit Boards and Copper Electrical Wire - Safe Clean Residues with No Goopy Mess (2oz Jar)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-17*