---
product_id: 444822560
title: "GRS Tools 003-664 Thermo-Lock 1/2 lb."
brand: "grs"
price: "€ 119.31"
currency: EUR
in_stock: true
reviews_count: 5
category: "Grs"
url: https://www.desertcart.hr/products/444822560-grs-tools-003-664-thermo-lock-1-2-lb
store_origin: HR
region: Croatia
---

# 6-inch precision sticks non-toxic & safe eye-strain reducing gray tone GRS Tools 003-664 Thermo-Lock 1/2 lb.

**Brand:** grs
**Price:** € 119.31
**Availability:** ✅ In Stock

## Summary

> 🔥 Lock in your grip, not your eyes! 👁️‍🗨️

## Quick Answers

- **What is this?** GRS Tools 003-664 Thermo-Lock 1/2 lb. by grs
- **How much does it cost?** € 119.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/444822560-grs-tools-003-664-thermo-lock-1-2-lb)

## Best For

- grs enthusiasts

## Why This Product

- Trusted grs brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Made in the USA:** Crafted domestically to meet rigorous standards and support local manufacturing
- • **Safety First, Always:** Non-toxic formula ensures a safe workspace without compromising quality
- • **Precision in Every Stick:** Supplied in convenient 6-inch (150mm) lengths for exact application
- • **Work Smarter, Not Harder:** Medium gray color reduces eye strain under bright work lights—comfort meets efficiency
- • **Trusted Quality, Proven Results:** High-quality Thermo-Lock formula that professionals rely on for durable grips

## Overview

The GRS Tools 003-664 Thermo-Lock 1/2 lb. comes in 6-inch sticks with a medium gray color designed to reduce eye strain under work lights. This high-quality, non-toxic grip enhancer is made in the USA, offering professionals a safe and efficient tool for superior handling and comfort.

## Description

International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

Review: This stuff is awesome... wish I had it 25 years ago
Review: Unbrauchbar,gechört zu Mühltonne!!!

## Features

- Supplied in convenient 6" (150mm) long sticks
- Thermo-Loc is a medium gray color designed to reduce eye strain under work lights
- High quality product
- It is non-toxic

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00VQXCXXM |
| Batteries required | No |
| Best Sellers Rank | #91,838 in Toys ( See Top 100 in Toys ) #475 in Kids' Jewelry-Making & Beadwork Kits |
| Customer Reviews | 4.5 4.5 out of 5 stars (103) |
| Date First Available | 10 September 2021 |
| Import designation | Made in US |
| Item model number | 003-664 |
| Package Dimensions | 16 x 5.79 x 2.9 cm; 231 g |

## Images

![GRS Tools 003-664 Thermo-Lock 1/2 lb. - Image 1](https://m.media-amazon.com/images/I/41ffZBI3-+L.jpg)

## Questions & Answers

**Q: at what temperature is it pliable?  I'm using a coffee warmer which goes to 131 degrees F, is that warm enough?**
A: It should be! I think it said 120 F in the instructions. I used a hair dryer for a while (slow but works) and now a heat gun.

**Q: Can this be used as a mold for metal resin or resin on pattern silicone sheets?**
A: I'm not sure if the resin will come away from the Thermo-lock cleanly or not.

**Q: Can Thermo-Lock be used to hold cast bezel pieces that require some removal of metal? Can it withstand some heat without the piece coming loose?**
A: Good question--Thermal lock heats very quickly in the microwave--and I only use it for engraving--I know it would hold the bezel in place nicely--as far as heat--maybe not

**Q: can it be used to embed stones on a jewelry piece while soldering? or will the compound melt too quickly?**
A: Do not - and I repeat DO NOT - expose to open flame.  It will burn quickly and the larger the piece the larger the flames and hotter it gets.  I tested it when I got the idea as well.  I test stones that I work with to see what their tolerance to soldering heat is.  Some stones are OK, but others will crack or shatter.  It is all part of the learning process.  Also, keep a fire extinguisher near your bench.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***B on 12 January 2018*

This stuff is awesome... wish I had it 25 years ago

### ⭐ Review
*by B***. on 15 August 2025*

Unbrauchbar,gechört zu Mühltonne!!!

### ⭐⭐⭐⭐⭐ Review
*by B***K on 6 December 2025*

Igual a las fotografías. Aún no he podido probarlo

## Frequently Bought Together

- GRS - 1/2 Lb Bag Of Thermo-loc (225 Gm)
- VEVOR Ball Vise 5" Engraving Setting Tool 360°Rotation Engraving Block Vise 34 PCS Attachment Jewelry Engraving Block Tools Standard Block(5inch)
- Jewelry Engraver Tools,Engraving Cutting Bits for Pneumatic Impact Engraving Machine Jewelry Tool Edge Tungsten Steel Carving Graver Knife

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**Shop now:** [https://www.desertcart.hr/products/444822560-grs-tools-003-664-thermo-lock-1-2-lb](https://www.desertcart.hr/products/444822560-grs-tools-003-664-thermo-lock-1-2-lb)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-04-22*