About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out any material, long-term or laboratory tests. The tests are carried out by 1-2 independent consumers over a period of 7-14 days. The exact test conditions can be viewed in the test plan of the respective test report – click here to go directly to the test plan.

Manufacturers provide the tested products free of charge. We charge a one-off test fee for carrying out the tests. In addition, manufacturers pay an annual licence fee for the use of the Prüfengel seal. We also receive a commission for linking to manufacturers’ websites. These remunerations have no influence on our test results or ratings.

We guarantee transparency and a fair evaluation. For a detailed insight into our comprehensive evaluation process, please click here.

Kraftfels
Cutter knife blades

The cutter blades from Kraftfels are the ideal addition for craftsmen and DIY enthusiasts.
With 60 high-quality blades and a practical storage box, this product offers both sharpness and easy handling. The blades are made of the best material, are very sharp and impress in practical use. They are suitable for a variety of materials and are characterized by their easy handling. The manufacturer promises a sophisticated design, high sharpness and a wide range of applications. The cutter blades are not only functional, but also visually appealing. No matter which cutter knife is used, these blades fit perfectly.
In our test, we investigated whether these promises are kept and whether there are any potential weaknesses.

Advantages

✅ Very sharp blades
✅ Practical storage box
✅ High-quality materials

Disadvantages

❌ No information on sustainability

The first impression

Packaging and contents

ℹ️ Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Product protectionCarton is sturdy, product sufficiently protected100 points
Sustainability PackagingNo unnecessary packaging waste, no use of plastic100 points
Package contents & scope60 cutter knife blades (18 mm thick)100 points
Instructions for useClearly written100 points
Total100 points
Weighting: 20%
*The maximum score is 100 points

First impressions count and the Kraftfels cutter knife blades make an excellent impression. The packaging is not only neat, but also tailored to the product size, which avoids unnecessary packaging waste. This is not only environmentally friendly, but also makes unpacking easier. The blades arrived in perfect condition with no scratches or soiling. A particularly positive aspect is that the packaging does not use plastic, which contributes to a more sustainable product presentation. There are a total of 60 blades inside, which are stored in practical boxes, making handling and organization much easier. The instructions for use are clearly understandable, making it easy to get started using the blades .

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearanceSophisticated design, made of carbon100 points
ProcessingNo defects100 points
StabilityHigh stability100 points
Sustainability of the productNo information on sustainability, but high-quality materials and high durability of the product 80 points
Total 95 points
Weighting: 20%
*The maximum score is 100 points
The cutter blades are ready for the practical test.

When you pick up the Kraftfels cutter knives for the first time, you immediately notice the attractive yet simple design. The workmanship of these blades is of a remarkably high standard, which not only ensures excellent stability, but also a long service life. The blades are made of high-quality carbon and are therefore extremely robust and resistant.
However, it should be noted that despite the obvious material quality, there is no explicit information on durability. Nevertheless, the Kraftfels brand stands out positively with its successful combination of appearance and workmanship. Unfortunately, there is no information on sustainability.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkScore achieved*
UseEasy to use, even by a layperson, as it is very intuitive95 points
Optics/ DesignSimple design and beautiful look100 points
Possible applicationsCan be used on many materials100 points
SharpnessKnife is very sharp and cuts through materials easily100 points
ProcessingVery well made100 points
Total99 points
Weighting: 45%
*The maximum score is 100 points

During our intensive practical test, we were able to confirm that Kraftfels delivers more than the advertising promises.
Handling the cutter knives is extremely user-friendly and intuitive. Both experienced craftsmen and amateurs can handle this tool with ease. The simple and aesthetic appearance of the product underlines its quality and ensures an appealing appearance. Above all, however, these blades prove to be true sharpening experts. A wide variety of materials are cut through effortlessly, making the work process efficient and time-saving . There are virtually no limits to the wide range of applications for this tool . From paper and cardboard to thin plastics – Kraftfels cutter knife blades master these tasks with flying colors. Their sharpness is impressive and they always remain reliable, even for demanding tasks . This product therefore lives up to its advertising promises and is ideal for a wide variety of cutting tasks. The ease of use and versatility of the blades make them a reliable choice for precise and effective cutting results. The cutter blades are available in 60 and 120 pieces.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we examine how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it?

CriterionRemarkScore achieved*
Price / performance ratioVery good performance in the lower price segment90 points
Rating cutNot rated, as there are still too few customer reviews
Total90 points
Weighting: 15%
*The maximum score is 100 points

Prices of up to €28 are charged on the Internet for equivalent products. Very inexpensive products are available from as little as €8 . The cutter knife blades from Kraftfels are therefore currently in the lower price segment with a price of €8.90. For the quality and performance received, the price-performance ratio is good.

Overall result

WeightingScore achieved*
1. packaging & contents20% 100 points
2. product processing & appearance20%95 points
3. in the practical test45%99 points
4. price/performance & consumer ratings15%90 points
Total97 points
*The maximum score is 100 points
Cutter knife blades
 of the brand 
Kraftfels
achieved
97
Points in our test and therefore passed. The test was carried out in the test period
12/23
and is stored in our database under the licence number
231220003
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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