4" ADJUSTABLE WRENCH
4" ADJUSTABLE WRENCH
4" ADJUSTABLE WRENCH
4" ADJUSTABLE WRENCH

100mm (4")Adjustable Wrench With 15mm (1/2") Jaw Opening

£3.99

Tax included

Made from heat treated, drop-forged carbon steel with chrome plating, this durable 100mm (4") adjustable wrench has a 15mm (1/2") jaw opening.

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Description How to Use Warranty

4" ADJUSTABLE WRENCH

This premium 4" adjustable wrench is an essential tool for any DIY enthusiast or professional tradesperson. Crafted from heat-treated, drop-forged carbon steel, it boasts exceptional strength and durability, ensuring it can withstand heavy use in various applications. The chrome plating not only enhances its resistance to rust and corrosion but also provides a sleek finish that will last over time. With a versatile jaw opening of 15mm (1/2"), this wrench is perfect for tackling a range of fastening tasks with ease and precision. Whether you’re working on plumbing, automotive repairs, or general maintenance, this tool is designed for superior grip and torque, making it an invaluable addition to your toolbox.

- 🔧 Compact and lightweight design for easy handling
- 💪 Superior strength from heat-treated, drop-forged carbon steel
- 🚀 Corrosion-resistant chrome plating for long-lasting use

🔹 How to Use

🔹 Step 1: Open the adjustable wrench by turning the knurled knob counter-clockwise to create enough space for the nut or bolt
🔹 Step 2: Position the jaws of the wrench around the nut or bolt head that you need to grip
🔹 Step 3: Tighten the knurled knob clockwise until the wrench securely grips the nut or bolt
🔹 Step 4: Turn the wrench to loosen or tighten the fastener as needed
🔹 Step 5: After use, release the jaw by turning the knob counter-clockwise and store the wrench in a dry place to maintain its condition

We work hard to make sure Amtech tools are reliable as well as affordable. However, if you have a problem with any product, we want to get your job up and running again as quickly as possible.

All our hand tools are backed by a three year product replacement warranty and our power tools range are covered for up to two years.

So if something develops a fault within the specified warranty period, we’ll replace it, subject to proof of purchase.

100mm (4

Is This the Right Tool for You

Is This Tool Right For You?

🔧 Ideal for plumbing tasks where tight spaces restrict larger tools

🔧 Perfect for automotive repairs, allowing easy adjustments on nuts and bolts

🔧 Great for DIY home improvement projects requiring reliable grip and leverage

🔧 Convenient for assembling furniture with adjustable fittings

🚫 Not suitable for heavy-duty industrial applications that require more torque

🚫 Less effective for precision tasks where a socket set would provide a better fit and control

How This Tool Makes Your Job Easier

How This Tool Makes Your Job Easier

🔧 Made from heat-treated, drop-forged carbon steel, this adjustable wrench offers exceptional strength and durability, ensuring it can withstand heavy use without bending or breaking.

🔧 The chrome plating not only enhances the wrench's appearance but also protects it from rust and corrosion, prolonging its lifespan and reducing the need for frequent replacements.

🔧 Its 100mm (4") size and 15mm (1/2") jaw opening provide versatility, allowing you to easily tackle a variety of tasks, whether you're working on plumbing, automotive repairs, or general maintenance.

🔧 The adjustable feature enables a secure grip on different sizes of nuts and bolts, improving efficiency and making it unnecessary to carry multiple wrenches for various jobs.

100mm (4

How We Compare

Feature ✅ 100mm (4")Adjustable Wrench With 15mm (1/2") Jaw Opening ❌ Other
Durability ✅ Constructed from heat treated, drop-forged carbon steel with chrome plating, ensuring it can withstand heavy use and resist corrosion. ❌ Often made from lower-quality materials, which may lead to wear and tear over time, ultimately compromising its lifespan.
Jaw Opening Versatility ✅ With a 15mm (1/2") jaw opening, it accommodates a wide range of fasteners, making it a versatile tool for both DIY enthusiasts and professionals. ❌ Typically has a smaller jaw opening, limiting its usability for various tasks, especially on larger fasteners that require more significant torque.
Precision Engineering ✅ Engineered for a precise fit on nuts and bolts, minimizing the risk of stripping or rounding off fasteners. ❌ May have a looser adjustment mechanism, which can lead to imperfect attachment and increased wear on both the tool and fasteners.
Vector

Why Buy from Amtech?

🔧 Why Choose Amtech?

• Trusted Quality: Over 30 years of reliable performance.

• Everyday Practicality: Designed for real jobs – smart, durable, easy to use.

• Great Value: Professional results without the premium price tag.

• Ongoing Support: Straightforward warranties and UK-based after-care.

• 90-Day Free Returns: Just in case it’s not quite right for your project.

Frequently Asked Questions

You have questions, we have answers

What makes Amtech tools different from other brands?

Amtech stands out for its commitment to quality, affordability, and variety. We offer a wide range of high-quality, durable tools at budget-friendly prices, making us a go-to choice for both DIY enthusiasts and professionals.

How can I get assistance if I'm unsure which Amtech tool is right for my project?

Our customer service team is always ready to help. You can email us at support@amtechdiy.com or call on 0189 5435556. We can guide you in choosing the right tool for your specific project needs.

What’s your returns policy?

Somtimes a product might not be just right for your project, and that's why we offer 90-day free returns. Start a return from “My Account.” We’ll email a pre-paid Evri label—drop it at your nearest Evri point.

What warranty do you offer?

Rest assured, you're covered with our 3-Year No-Fuss Warranty on all Hand Tools, and a 2 Year No-Fuss Warranty on Power Tools. No registration needed - just keep your proof of purchase.



Can I buy Amtech locally?

Absolutely! We have thousands of great stockists acoss the UK - find your nearest one here.

Be sure to call ahead to check stock availability!

DIY Know How DIY Know How

DIY Know How

At Amtech, our mission is to empower every DIY’er—no matter their experience level—to tackle tasks with confidence and ease. We provide affordable, reliable tools, along with honest advice and practical know-how, so you can feel supported every step of the way.

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