10x Replacement blade for olfa knives 18mm - Superior sharpness and durability for every workshop
Are you looking for reliable, extremely sharp and durable replacement blades for your olfa knife? The 10x Replacement Blade for olfa knives 18mm (SKU: G01856) is the perfect choice for both professional craftsmen and DIYers. This set of ten high-quality blades ensures that you will always have a sharp blade at hand when you need it most. Forget about annoying tearing of materials and inefficient work - with our replacement blade set, every cut will be smooth, precise and safe.
Each blade in this pack is designed with precision and longevity in mind. Whether you're cutting cardboard, wallpaper, leather, carpet or plastic, these blades will rise to the challenge. Investing in quality replacement blades is key to preventing dangerous slips that often occur when using blunt cutting tools. Get professional results on every project with minimal effort.
Why choose replacement blades for olfa knives 18mm?
When working with hand tools, the quality of the blade is crucial for the final result and your safety. Blunt blades require more force, which can quickly lead to mistakes, material damage or even personal injury. Our set of 10 replacement blades with a width of 18 mm offers the optimal solution for continuous, safe and smooth work in all conditions.

Exceptional strength and sharpness: The blades are made of particularly hard steel, which ensures long-lasting sharpness and high wear resistance.
Universal Compatibility: The standard 18mm dimension fits perfectly with most standard olfa knives and universal cutters on the market.
Practical and safe storage: The blades are packed in a convenient protective plastic case, which prevents damage during transport and allows safe storage in your tool bag or drawer.
Excellent value for money: For the extremely affordable price of €4.99 you get 10 professional blades, which means a long-lasting supply for all your upcoming projects.

Key features and technical data
This set of blades is an indispensable tool in any workshop, office, warehouse or home household. Below are the main technical specifications of the product, which confirm its superior quality:

Material: Made of high-quality hardened steel for maximum durability and resistance to bending.
Blade width: Standard width of 18 mm, which is ideal for more demanding and precise cutting tasks.
Quantity in package: 10 pieces of replacement blades in one package, ensuring a long service life for your equipment.
Packaging: Practical and safe protective plastic case that effectively protects the blades from moisture, dust and mechanical damage.
Product code (SKU): G01856

Versatile use for various projects
Thanks to their superior manufacturing from hardened steel, these 18 mm blades are suitable for a wide range of demanding tasks. They can be used to cut the following materials easily, quickly and with extreme precision:

Thick cardboard, three-ply cardboard and packaging materials when packing, shipping or creating.
Wallpaper, self-adhesive foils and paper during home renovation, painting or decorating.
Floor coverings such as linoleum, vinyl planks and thinner carpets where a straight and clean cut is required.
Insulating materials, leather, rubber, seals and various plastics in technical projects.

When the current blade tip wears out, simply break it off along the marked line using the back of your olfa knife and you have a brand new, sharp edge to continue working with. When you have used up all the segments of a single blade, simply and safely insert a new blade from the supplied plastic case. With this system, you will always work at maximum productivity.
Frequently Asked Questions (FAQ) about the product
1. Are these blades suitable for all brands of olfa knives?
Yes, these are standard 18mm wide replacement blades that are fully compatible with most standard olfa knives, upholstery knives and other universal hand cutters of this dimension on the market.
2. How to safely store unused blades?
The blades are supplied in a dedicated protective plastic case. We recommend that you always store unused blades closed in this case, out of the reach of children, and in a dry place to prevent any damage or moisture from affecting the steel.
3. How do I know when it is time to replace or break off a blade segment?
When you notice that the blade no longer glides smoothly through the material or starts to tear edges instead of making a clean and smooth cut, it's time to break off the top segment along the marked line or insert a brand new replacement blade from the package.


Responsible persons:
GEKO - GEKO SPÓŁKA Z OGRANICZNĄ ODPOWIEDZIALNOŚCIA SPÓŁKA KOMANDYTOWA, ul. Spacerowa 3, 97-500 Kietlin, Poland, (+48) 446824004, geko@geko.pl
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:
• Before changing the blade, check that the olfa/upholstery knife is compatible with a 18 mm wide blade. This set contains 10 hardened steel blades stored in a protective plastic case.
• Place the knife on a stable surface and completely remove the old blade.
• Remove the old blade according to the mechanism of the specific knife.
• Insert the new blade into the knife guide so that it is oriented correctly and fully seated.
• Check that the blade is firmly locked and does not move sideways.
• Only pull the blade out as far as necessary for cutting.
• When cutting, always guide the knife away from your body and use even pressure.
• When the blade becomes blunt, replace it or, in the case of breakable versions, use the next sharp segment, if this is provided for the specific blade.
• Leave unused blades in the protective plastic case.

Useful tips for work:
• Blades are designed for 18mm olfa knives; always check compatibility with your knife mechanism before use.
• When cutting cardboard, wallpaper, foils and similar materials, use the appropriate blade depth and do not expose the blade more than necessary.
• With thicker material, it is safer to make several controlled passes than to use excessive force.
• If the cut is no longer smooth or you have to use more force to cut, it is time to change the blade.
• For a more precise cut, use a straight guide and secure the material before cutting.
• When cutting harder materials, do not twist the blade sideways as it may break.
• After finishing work, completely retract the blade into the knife housing.
• Dispose of used blades immediately in a hard, closed container to prevent anyone from cutting themselves during disposal.

Warnings:
• The blades are very sharp – risk of serious cuts.
• When changing the blade, use special care and always hold it by the non-sharp part.
• Never hold the material directly in front of the blade and do not cut towards your hand or body.
• Do not use a damaged, bent or corroded blade.
• Do not use the blade if it cannot be securely attached to the knife.
• Do not use excessive force. If the blade binds, check the material and cutting method.
• Before changing the blade, retract the blade completely and secure the knife against unintentional movement.
• Wear safety glasses when working where material fragments may be generated.
• For more demanding work, protective gloves are recommended that do not hinder safe knife handling.
• Do not leave blades on the work surface where they can be accidentally touched.
• Keep out of reach of children.
• Do not dispose of used blades directly in the general waste stream where they may cause injury to others; use securely closed packaging or an appropriate method of collecting sharp metal waste.
• Store blades in their original protective case, in a dry place.

Same summary

The 18 mm replacement blade for olfa knives is suitable primarily for universal manual tasks where quick and reliable blade changes and cutting precision are required. The medium length of the blade provides a good balance between safety and efficiency, making it useful at home, in the garden or for light construction work. It may not be the most suitable choice for thicker materials or more intensive use, as a longer, more robust blade would be recommended. The advantage of this type is practicality, but for specialized electrical or modeling work it is recommended to check the suitability according to the requirements of the project.

Recommendation source: Enaa guides and team experience.

User view

This type of replacement blade is usually found by users who often do home repairs and want to easily replace blades on various olfa knives. It is most practical when opening packaging, cutting plastics, foil or occasionally tidying up the garden and workshop. Due to the balance between length and precision, it is appreciated by both hobby craftsmen and those who need a little more room for maneuver in serial tasks.

The repeated trust of users is also based on the Geko brand, which is recognized for its reliability and predictable results in the everyday use of garden and hand tools.

Why buy at Enaa

At Enaa you will find a proven range of blades for olfa knives, professionally supported by the team's experience and clear information regarding the usability and suitability of individual models.

Answers to frequently asked questions

Which materials is the blade best suited for?

The blade is suitable for cutting paper, foil, thin plastic, cardboard and other lighter materials where precision is important.

Can I use this blade in all olfa knives with an 18mm slot?

Most standard olfa knives that accept an 18 mm blade are compatible, but it is recommended to check the instructions of your knife manufacturer.

How often should I change the blade?

It makes sense to change the blade when the cut becomes unevenly hard or you notice more tears in the cut; more often in intensive construction use than in occasional home use.

Is the blade also suitable for fine modeling work?

Due to its length and strength, it is also useful for model making, but for really fine details and precision, it is sometimes better to choose a shorter or specialized blade.

What should I consider when storing replacement blades?

Store blades in a dry place, preferably in the original packaging, away from children and damp work environments.

Description updated: April 2026