---
product_id: 13103877
title: "Stone Tools ST-12 The Original Professional Master Chuck Key"
brand: "stone tools"
price: "฿85"
currency: THB
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.th/products/13103877-stone-tools-st-12-the-original-professional-master-chuck-key
store_origin: TH
region: Thailand
---

# Black oxide finish for corrosion resistance 4 pilot hole sizes for versatile fit Heat-treated steel for ultimate durability Stone Tools ST-12 The Original Professional Master Chuck Key

**Brand:** stone tools
**Price:** ฿85
**Availability:** ✅ In Stock

## Summary

> 🛠️ Unlock Precision & Power with the Original Master Chuck Key!

## Quick Answers

- **What is this?** Stone Tools ST-12 The Original Professional Master Chuck Key by stone tools
- **How much does it cost?** ฿85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/13103877-stone-tools-st-12-the-original-professional-master-chuck-key)

## Best For

- stone tools enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Heat-treated alloy steel ensures long-lasting strength and wear resistance
- • **Multi-Tool Utility:** Squared center doubles as acetylene tank opener—more than just a chuck key
- • **Quad-Function Design:** 4-way key with multiple pilot hole sizes to tackle any chuck
- • **Compact & Lightweight:** Only 5.6 oz and pocket-friendly dimensions for on-the-go pros
- • **Universal Compatibility:** Fits over 86 drill chucks including Jacobs for seamless use

## Overview

The Stone Tools ST-12 Master Chuck Key is a professional-grade, heat-treated alloy steel tool with a black oxide finish, designed to securely lock and unlock drill chucks. Featuring 4 pilot hole sizes and compatibility with over 86 chuck models, it also doubles as an acetylene tank opener. Compact and durable, it’s engineered for the demanding needs of professionals and DIY enthusiasts alike.

## Description

Product Description The Stone Tools professional grade 4 way chuck key with black oxide finish is an ideal accessory for securing drill bits onto drill presses. This key is made of high quality steel with black oxide for increased wear resistance. Most importantly, the chuck key is compatible with many chucks such as Jacobs branded drill chucks. From the Manufacturer The Stone Tools Model Number ST-12 Master Chuck I, the original professional master chuck key, opens heavy duty 3/8-Inch to 3/4-Inch chucks. Made from heat treated alloy steel with a black oxide finish, it will open over 86 different chucks. Squared center of the key will open acetylene tanks.

Review: Didn't work for me, not the keys fault. - This did not fit my Delta drill press chuck. I am not faulting the company because I believe Delta had a proprietary size that wasn't listed anywhere I could find. This would work well for those that have another chuck with a known key size.
Review: Bait and Switch - Caution! Bait and Switch! The picture appears to be a nicely cut tool that is proper tool steel and anodized black. What you get is a cheap pot metal cast tool that is spray painted black. It is undersized, out of spec for the Chuck key dimensions it claims, and the heavy spray paint/powder coat/enamel junk chips off and gunks up the teeth of your drill chuck. It's too small to use and will not last long with the slop in the teeth and the paint chipping off. Garbage waste of money.

## Features

- The Stone Tools 4 way chuck key is the ideal tool for unlocking and locking of various, popular drill chucks to keep drill bits in place
- Each key is made of heat-treated steel with a black oxide finish for an optimal combination of durability and hardness
- Center square feature is ideal for opening acetylene tanks
- Includes 4 pilot hole sizes: 3/8" with 12 teeth; 1/4" with 10 teeth; 5/16" with 11 teeth; 1/4" with 11 teeth

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0000AX9Q8 |
| Best Sellers Rank | #810,477 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #988 in Power Lathe Accessories |
| Brand Name | Stone Tools |
| Capacity | 0.38 Inches |
| Compatible Devices | Drilling Machine |
| Customer Reviews | 3.7 3.7 out of 5 stars (1,572) |
| Global Trade Identification Number | 00012300998062, 00092781000126 |
| Handle Type | straight |
| Included Components | Stone Tools ST-12 The Original Professional Master Chuck Key |
| Item Type Name | Chuck Key |
| Lock Type | manual |
| Manufacturer | Stone Tools |
| Manufacturer Part Number | ST-12 |
| Manufacturer Warranty Description | One year against defects in material and workmanship |
| Material Type | Alloy Steel |
| Model Number | ST-12 |
| Thread Size | 1/2-20 UNC |
| UPC | 012300998062 021112062854 092781000126 927810001266 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Stone Tools
- **Capacity:** 0.38 Inches
- **Compatible Devices:** Drilling Machine
- **Material:** Alloy Steel
- **Thread Size:** 1/2-20 UNC

## Images

![Stone Tools ST-12 The Original Professional Master Chuck Key - Image 1](https://m.media-amazon.com/images/I/61O9F8skR0L.jpg)
![Stone Tools ST-12 The Original Professional Master Chuck Key - Image 2](https://m.media-amazon.com/images/I/71-hMv8IehL.jpg)
![Stone Tools ST-12 The Original Professional Master Chuck Key - Image 3](https://m.media-amazon.com/images/I/713UXyjorFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Didn't work for me, not the keys fault.
*by R***. on September 4, 2017*

This did not fit my Delta drill press chuck. I am not faulting the company because I believe Delta had a proprietary size that wasn't listed anywhere I could find. This would work well for those that have another chuck with a known key size.

### ⭐ Bait and Switch
*by D***D on June 1, 2021*

Caution! Bait and Switch! The picture appears to be a nicely cut tool that is proper tool steel and anodized black. What you get is a cheap pot metal cast tool that is spray painted black. It is undersized, out of spec for the Chuck key dimensions it claims, and the heavy spray paint/powder coat/enamel junk chips off and gunks up the teeth of your drill chuck. It's too small to use and will not last long with the slop in the teeth and the paint chipping off. Garbage waste of money.

### ⭐⭐⭐⭐⭐ Works but wish I could find an 8 star.
*by D***T on June 21, 2020*

I would like to give this product five stars but in fact I just did however I have to buy it a second time because I am sure the first one I purchased buggered off home to go find its maker as I cannot find it. I seem to think however the reason I purchased this was because I lost my original chuck so maybe I have a problem in loosing things?

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-26*