---
product_id: 59889584
title: "U8 Safe 3-Wheel Combination Lock Change Key (INCLUDES INSTRUCTIONS)"
brand: "sargent & greenleaf"
price: "$126733"
currency: COP
in_stock: true
reviews_count: 10
category: "Sargent & Greenleaf"
url: https://www.desertcart.co/products/59889584-u8-safe-3-wheel-combination-lock-change-key-includes-instructions
store_origin: CO
region: Colombia
---

# 3-wheel combo lock compatible Durable metal build for repeated use Includes clear step-by-step instructions U8 Safe 3-Wheel Combination Lock Change Key (INCLUDES INSTRUCTIONS)

**Brand:** sargent & greenleaf
**Price:** $126733
**Availability:** ✅ In Stock

## Summary

> 🔑 Take control of your safe’s security—because your valuables deserve VIP treatment!

## Quick Answers

- **What is this?** U8 Safe 3-Wheel Combination Lock Change Key (INCLUDES INSTRUCTIONS) by sargent & greenleaf
- **How much does it cost?** $126733 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/59889584-u8-safe-3-wheel-combination-lock-change-key-includes-instructions)

## Best For

- sargent & greenleaf enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Sturdy metal construction ensures reliable performance over multiple uses
- • **User-Friendly Design:** Clear, straightforward instructions make reprogramming simple for all skill levels
- • **Precision Compatibility:** Designed specifically for SARGENT & GREENLEAF 6600 & 6700 locks
- • **Effortless Security Control:** Change your safe’s combo anytime without a locksmith hassle
- • **Cost-Effective Peace of Mind:** Save on locksmith fees while maintaining exclusive access to your valuables

## Overview

The SARGENT & GREENLEAF U8 Safe 3-Wheel Combination Lock Change Key is a precision-engineered metal tool designed for quick, secure combination changes on S&G 6600 and 6700 series locks. It includes clear instructions, requires no batteries, and empowers users to update their safe’s code independently, enhancing security while saving time and money.

## Description

Change tool and instructions.

Review: Empowering and Efficient - A Must-Have for Liberty Safe Owners - The SARGENT & GREENLEAF U8 Safe 3-Wheel Combination Lock Change Key has been a fantastic investment, offering independence and peace of mind in managing my safe's security. Its primary benefit was changing the combination of my Liberty Safe without needing a locksmith. This saved me time and money and added an extra layer of security. Being the only one who knows my safe's code is reassuring, especially considering the importance of the items I store in it. The change key itself is user-friendly. The instructions provided were clear and straightforward, making the process of changing the combination relatively simple. Even for someone who isn't particularly handy, the process was manageable and didn't require any specialized knowledge or tools. The build quality of the key is also noteworthy. It feels sturdy and well-made, instilling confidence that it can be used multiple times without any issues. This durability is important for a tool that plays a critical role in the security of valuable possessions. Moreover, the convenience this change key provides cannot be overstated. It allows for quick and easy reconfiguration of the safe's combination, which is ideal for situations where security needs to be updated frequently. TL;DR: The SARGENT & GREENLEAF U8 Safe 3-Wheel Combination Lock Change Key is an essential tool for anyone with a compatible safe. It provides a cost-effective, simple, and secure way to change your safe combination, ensuring that you're the only one with access to your valuables.
Review: Worked Like a Charm - This change key is specifically for Sargent and Greenleaf Series 6600 and 6700 locks. The instructions included are for 6600 and 6700 locks and match exactly those I downloaded from S&G’s website. My understanding is that this change key works for all S&G 3-number locks. However, the instructions differ slightly on some models, so you will want to go to S&G’s website and download their instructions for other models. If you’re not sure what lock you have, it’s molded into the back cover of the lock. If you’re not sure if this the correct change key, contact the seller directly. The change procedure is simple and the instructions are clear and easy to follow. There are also some good videos online (YouTube) of the procedure. But this is vital: Do NOT close the door of your safe until you’ve tried your new combination several times successfully with the door open. And, of course, don’t forget your new combination. Remember, once you change it, you’re on your own. Any record the safe manufacturer or dealer may have is now invalid. It’s entirely up to you to remember the new combination. This tool seems a bit expensive. But, you know what’s really expensive? Messing up your safe with the wrong change key. Fradon is a respected Locksmith and this is the correct tool for S&G 6600 and 6700 locks. When you think about it that way, this key is pretty cheap.

## Features

- Suits 6600 & 6700 3 Wheel Locks

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078YDX1WL |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #92,124 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #212 in Combination Locks |
| Brand | Sargent & Greenleaf |
| Color | Silver |
| Control Method | Remote |
| Controller Type | Hand Control |
| Customer Reviews | 4.6 4.6 out of 5 stars (472) |
| Date First Available | January 19, 2016 |
| Finish | Unfinished |
| Finish Type | Unfinished |
| Included Components | Change tool, instructions |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.317 ounces |
| Item model number | 53978a68-471b-4f5f-801d-13cb98e74f4c |
| Lock Type | Combination Lock |
| Manufacturer | Sargent & Greenleaf |
| Material | Metal |
| Model Name | U8 |
| Number of Pieces | 1 |
| Package Dimensions | 3.07 x 2.05 x 0.63 inches |
| Part Number | 6089864 |
| Recommended Uses For Product | securing valuables, protecting personal belongings, or child-proofing certain areas |
| Shape | Rectangular |
| Special Feature | Key Lock |
| Special Features | Key Lock |
| Style | Modern |

## Product Details

- **Brand:** Sargent & Greenleaf
- **Lock Type:** Combination Lock
- **Material:** Metal
- **Recommended Uses For Product:** securing valuables, protecting personal belongings, or child-proofing certain areas
- **Special Feature:** Key Lock

## Images

![U8 Safe 3-Wheel Combination Lock Change Key (INCLUDES INSTRUCTIONS) - Image 1](https://m.media-amazon.com/images/I/61ornO5dAZL.jpg)

## Questions & Answers

**Q: will it work on Major safe co that has been broken into by the expert and given new combination numbers?  Can I reset the numbers with this?**
A: This key will let you reset the combination of S&G U8 3-wheel locks, but not other models like S&G 4-wheel locks.  These keys are not interchangeable across lock models and manufacturers.

**Q: Will this work on a Cannon D-4557?**
A: It will work if it a Sargent and Greenleaf lock.  There are a great number of safes that use this lock.

**Q: I have an american  sec safe ul1812 model.  3 wheel comb.  will your key work on this safe? sargent and greenleaf 3 wheel combination**
A: Yes

**Q: The key part number l am looking for is u8, b01asvvij2, as given to me by the s& g company? can you help please?**
A: This is the item. This is a U8, and the ASIN is B078YDX1WL. If you search for b01asvvij2 (not on Amazon but on a search engine) you'll find links that lead back here. Maybe that was an old or different kind of identifier for this item.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Empowering and Efficient - A Must-Have for Liberty Safe Owners
*by D***Y on January 5, 2024*

The SARGENT & GREENLEAF U8 Safe 3-Wheel Combination Lock Change Key has been a fantastic investment, offering independence and peace of mind in managing my safe's security. Its primary benefit was changing the combination of my Liberty Safe without needing a locksmith. This saved me time and money and added an extra layer of security. Being the only one who knows my safe's code is reassuring, especially considering the importance of the items I store in it. The change key itself is user-friendly. The instructions provided were clear and straightforward, making the process of changing the combination relatively simple. Even for someone who isn't particularly handy, the process was manageable and didn't require any specialized knowledge or tools. The build quality of the key is also noteworthy. It feels sturdy and well-made, instilling confidence that it can be used multiple times without any issues. This durability is important for a tool that plays a critical role in the security of valuable possessions. Moreover, the convenience this change key provides cannot be overstated. It allows for quick and easy reconfiguration of the safe's combination, which is ideal for situations where security needs to be updated frequently. TL;DR: The SARGENT & GREENLEAF U8 Safe 3-Wheel Combination Lock Change Key is an essential tool for anyone with a compatible safe. It provides a cost-effective, simple, and secure way to change your safe combination, ensuring that you're the only one with access to your valuables.

### ⭐⭐⭐⭐⭐ Worked Like a Charm
*by C***K on September 21, 2023*

This change key is specifically for Sargent and Greenleaf Series 6600 and 6700 locks. The instructions included are for 6600 and 6700 locks and match exactly those I downloaded from S&G’s website. My understanding is that this change key works for all S&G 3-number locks. However, the instructions differ slightly on some models, so you will want to go to S&G’s website and download their instructions for other models. If you’re not sure what lock you have, it’s molded into the back cover of the lock. If you’re not sure if this the correct change key, contact the seller directly. The change procedure is simple and the instructions are clear and easy to follow. There are also some good videos online (YouTube) of the procedure. But this is vital: Do NOT close the door of your safe until you’ve tried your new combination several times successfully with the door open. And, of course, don’t forget your new combination. Remember, once you change it, you’re on your own. Any record the safe manufacturer or dealer may have is now invalid. It’s entirely up to you to remember the new combination. This tool seems a bit expensive. But, you know what’s really expensive? Messing up your safe with the wrong change key. Fradon is a respected Locksmith and this is the correct tool for S&G 6600 and 6700 locks. When you think about it that way, this key is pretty cheap.

### ⭐⭐⭐⭐ Works but need to watch a few youtube videos first
*by J***. on February 8, 2025*

The key worked fine. The directions on the other hand were incorrect, at least for my lock. Things to note. I recommend watching a few youtube videos about changing the lock code first. Also when rolling back to unlock the bolt, that won't happen until you pass 0 at 95 to 85. If you follow the instructions like I did the lock won't work. But because have the door open I was able to remove the back of the lock and slowly and carefully fit the key back into the lock. Keeping track of how the key is aligned in relationship to the back cover, there are stops on the cover to only allow 90° rotation of the key. Once aligned check location of the key to the cover. The key needs to be aligned with the key whole in the cover so you can remove it and install the cover. Once cover is installed insert the key and operate it a few times to be sure it works correctly. DO NOT TURN THE DIAL DURING THIS STEP. Now insert the key turn it 90° till it stops. Set the combination following the instructions. But as was stated in my instructions DO NOT ROTATE TEN NUMBERS BACK FROM THE LAST NUMBER. At the last number rotate the key 90° to the right and remove the key. Then try the combination three or four times. Also note unlocking the bolt only happens when you rotate the dial to the right from the last number until it reaches 0 and should stop around 95 to 85 to retract the bolt.

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---

*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-02-20*