400g Hammer with fiberglass handle – Top locksmith tool for professionals and DIYers
Are you looking for an extremely durable, reliable and ergonomically designed hammer that will cope with even the most demanding tasks? The 400g hammer with a fiberglass handle is an indispensable tool in every workshop, on the construction site or for household chores. This high-quality engineering (locksmith) hammer combines the tradition of forged steel with modern composite material technology, ensuring maximum impact power with minimal effort.
Whether you're a professional craftsman who needs everyday reliability or a passionate DIY enthusiast, this 400g hammer will quickly become your favourite tool. Its well-thought-out design effectively dampens vibrations, protects your joints and allows you to work for long periods without fatigue.
Why choose a hammer with a fiberglass handle?
Traditional wooden handles tend to break, become damp and eventually loosen in the hammer head. The fibreglass handle offers 10 times greater mechanical strength than wood. This modern material is extremely light, yet virtually indestructible. It is also completely resistant to environmental influences, meaning it is unaffected by engine oils, petrol, solvents or moisture. You can use the hammer without worry in the toughest working conditions.
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Key advantages and benefits of using

Exceptional durability and long service life: The hammer head is forged from premium grade 50 steel. The forging process improves the metal structure, increases its homogeneity and reduces graininess, which directly affects the superior wear resistance.
Optimal hardness of the working surface: The impact surface of the head reaches a hardness of 52 HRC at a depth of at least 5 mm. This prevents deformation of the head and ensures safe work without the risk of chips when hitting hard materials.
Complete protection against rust: The head is precisely milled, ground and professionally painted, which effectively protects it from corrosion and extends its lifespan even when working in humid conditions.
Ergonomic and non-slip rubberized handle: The handle is covered with high-quality rubber that provides a firm grip, prevents slipping from your hands (even if your hands are sweaty or oily), and absorbs rebound vibrations upon impact.
Versatile: The ideal tool for a wide range of tasks such as nailing, sheet metal forming, demolition, concrete breaking and other heavy mechanical and construction work.

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Technical data and product specifications
Precise technical specifications ensure that you receive a tool tailored to the highest quality standards:

Tool type: Engineering/locksmith hammer
Head weight: 400 g
Head material: High quality forged steel (grade 50)
Impact surface hardness: 52 HRC (to a depth of min. 5 mm)
Head shape: Square
Head processing: Milled, ground and painted against corrosion
Handle material: Fiberglass with high mechanical strength
Handle coating: Ergonomic anti-slip rubber
Total product length: 298 mm
Head width: 113 mm
Head height/thickness: 26 mm
Product code (SKU): M82852 or 103229

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Presentation of operation and use in practice
See this top-notch tool in action! The video below demonstrates the hammer's durability, ergonomics, and efficiency in everyday work:
Click here to watch the hammer demonstration on YouTube
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Frequently Asked Questions (FAQ)
1. What are the advantages of a fiberglass handle compared to a wooden handle?
The fiberglass handle is up to 10 times stronger than a traditional wooden handle. It won't break, rot or dry out. It's also extremely resistant to chemicals such as oils, gasoline and solvents, and absorbs vibrations from impacts significantly better, reducing wrist and elbow fatigue.
2. What kind of work is a 400g hammer best suited for?
This engineering hammer with a head weight of 400 g is extremely versatile. It is the perfect choice for locksmithing, nailing, assembly work, metal forming and small demolition work such as breaking concrete or brick. Due to its optimal weight, it offers an excellent compromise between impact power and precision control.
3. Is the hammer head protected from rust?
Yes, the hammer head is made of grade 50 steel, which is subsequently milled and ground and coated with a special protective paint. This coating provides long-lasting protection against corrosion, rust and other external influences, even when the tool is used outdoors or in a humid environment.


Responsible persons:
MAR-POL - MAR-POL SCIMPORT EXPORT M.ŚCIANA, K.ŚCIANA, 26-020 Chmielnik, Suchowola 6a, Poland, obsluga@mar-pol.sklep.pl, +48607865357
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

MTX - TOOLS WORLD BULGARIA OOD, MALASHEVSKA STR.8, 1202 SOFIA, BULGARIA m.todorov@toolsworld.bg +359 2 423 9806
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
• Check that the hammer is suitable for the job you want to do.
• Wear appropriate protective equipment such as safety glasses and gloves when using a hammer.
• Hold the hammer by the handle and point it towards the object you want to hit.
• Hit the object with a strong swing.

Useful tips for work:
• Before use, check that the hammer is suitable for the job you want to do.
• Wear appropriate protective equipment such as safety glasses and gloves when using a hammer.
• When striking an object, make sure the hammer is aimed correctly and your posture is stable.
• After finishing work, clean the hammer and store it in a safe place to prevent damage.

Warnings:
• The hammer can cause injury from impact, slippage or flying particles.
• Wear safety glasses and appropriate protective gloves when working.
• Do not use the hammer if the head is loose, damaged or deformed.
• Do not strike objects or materials for which the hammer is not intended.
• Do not use a hammer with a damaged or badly worn handle.
• Be aware of people and objects in the immediate vicinity of the work area.
• Do not use the hammer as a lever or for other purposes for which it is not intended.
• Keep out of reach of children.

Same summary

The 400g hammer with a fibreglass handle offers a good balance between impact power and control, making it well suited for a wide range of basic tasks around the home, assembly and light carpentry. The durable grip handle design helps reduce vibration and increases comfort during repetitive work. The product is slightly less suitable for very precise tasks where a particularly light head is required, or for demanding demolition work where even more mass is desired. It will primarily appeal to users who value efficient use of the tool without unnecessary compromises in terms of fastening reliability and comfort during work.

Recommendation source: Enaa guides and team experiences.

User view

This type of hammer is most often chosen by home craftsmen and those who need a hammer for occasional but reliable maintenance work, especially when driving nails, small assemblies or for tasks in the workshop or garden. The fiberglass handle is especially appreciated by those who want a good grip and a little more protection against vibrations, which comes in handy for longer jobs.

Mar-Pol is considered an established brand in the hand tool category, which users often choose precisely because of the good balance between durability and practical use; more about this brand's products can be found at Mar-Pol .

Why buy at Enaa

Enaa makes it easy to compare different hammers within a category to make it easier to find the right tool for your tasks. In addition, with the reliable support of the Slovenian platform, every buyer can easily find accompanying advice for choosing a tool.

Answers to frequently asked questions

For which tasks is a hammer with a 400 g head best suited?

A hammer with a 400 g head is most useful for general household chores, assembly, and minor carpentry work where extreme impact force is not required, but enough power is needed to effectively drive nails.

What advantages does a fiberglass handle have compared to a wooden one?

A fiberglass handle offers better vibration damping compared to wood, is more resistant to cracking, and often provides a more secure and comfortable grip during prolonged use.

Is this hammer also suitable for demolition work or processing very hard materials?

A medium-weight hammer like this is not intended for heavy demolition tasks or working with the hardest materials; for these cases, we recommend using a sledgehammer or specialized tool.

How can I maintain my hammer so that it lasts longer?

After each use, check the condition of the head and handle, remove dirt and make sure there are no loose fasteners or damage, as this extends the life of the tool and ensures safety in further use.

Is a hammer better suited for right-handed or left-handed people?

The shape and material of the handle allow for equally comfortable use by both right- and left-handed people, making the product universal in terms of side of use.

Description updated: April 2026