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 material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

Edelstahl
Decking screws A2

The premium stainless steel decking screws A2 from INNONEXXT® made a very good impression overall in our test. According to the manufacturer, the screws are suitable for various types of wood and plastic. A suitable bit for installation is included with the decking screws. The design optimized for decking boards makes installation easier. The screws grip very well and create a stable connection between the decking boards. The decking screws are made of weather-resistant stainless steel , which guarantees a long service life.

Advantages

✅ Quick assembly
✅ Low screw-in forces
✅ High quality
✅ Suitable bit supplied
✅ High holding force
✅ Weather-resistant stainless steel

Disadvantages

❌ No e-mail and telephone number
❌ Screws cannot be magnetized

The first impression

Packaging and labeling

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 ensured.

CriterionRemarkScore achieved*
Product protectionShipping and product carton are sturdy, product sufficiently protected100 points
Sustainability PackagingNo unnecessary packaging waste was used, items were packed compactly100 points
Packaging conveniencePackaging was easy to open even without tools100 points
Total100 points
Weighting: 10%
*The maximum score is 100 points
Product packaging of the decking screws

The premium stainless steel decking screws from INNONEXXT® were delivered in a compact and sturdy shipping box. The shipping box was easy to open, even without tools. As the shipping box was slightly oversized, the empty space was filled with recycled paper. Inside the box were the decking screws in their product packaging. This meant that the decking screws were very well protected during transportation.
The product packaging is a resealable cardboard box in a simple green design. Again, no tools are required to open it. The box is appropriately sized for the decking screws and is filled almost to the brim with screws. This saves space during transportation. Like the product box, the decking screws are undamaged and in very good condition. In addition to the screws, the product box also contains a small plastic bag in which the appropriate bit for the screws is shrink-wrapped. The bag lies on top of the screws and protects the bit from scratches caused by the sharp-edged screws. Above all, however, the bag ensures that the bit can be found quickly and easily in the pile of almost identically colored screws.

After unpacking

Package contents and instructions

ℹ️ Most people’s first impression after unpacking is immediately memorable. Are the contents of the package complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Package contents & scope200 decking screws with matching bit100 points
Instructions for useNot available, but also not necessary100 points
Contact informationCan be found on the product packaging. Unfortunately no telephone number or e-mail address70 points
Total90 points
Weighting: 10%
*The maximum score is 100 points

The set contains 200 decking screws. The matching bit is also included so that the screws can be screwed in using a standard screwdriver or cordless screwdriver with bit holder. A screwdriver is not included in the scope of delivery.
Assembly instructions are also not included, but in our opinion are not necessary for the screws. The technical data with screw dimensions and material are printed on the product packaging.
The contact details can also be found on the product packaging. These include the company name, the company address and a website. Unfortunately, contact details are only available on the website. We would also have liked to see a telephone number and an e-mail address.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the product processing. How high quality are the materials used? Is the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearanceSilvery matt screws with rounded screw head100 points
ProcessingVery good workmanship with no noticeable flaws100 points
StabilitySturdy screws, cannot be deformed by hand100 points
Sustainability of the productGood quality indicates a long service life100 points
Total100 points
Weighting: 20%
*The maximum score is 100 points
Decking screws and bit in detail

The decking screws are supplied in the size 5.0 x 50 mm. The first number indicates the diameter including thread, the second number the length from the tip to the end of the head. A measurement confirms the manufacturer’s specifications. According to the manufacturer, the screws are made of stainless steel and are anti-friction coated. Stainless steel is resistant to corrosion and weathering. The screw is therefore also suitable for prolonged outdoor use. The coating is characterized by a slightly greasy surface. The color of the screw is matt-sibern, the mass of one screw is 3.9 g.
The screw consists of five segments: it starts with a tip that extends over a length of 10 mm until the screw reaches its full diameter. The tip is threaded from the start and also has a cutting notch to prevent cracking and splitting. The tip is seamlessly followed by a 20 mm long threaded section. The thread pitch is 2 mm, the internal diameter 3 mm. This is followed by the third part, the 10 mm long end mill. This has several threads, a significantly larger thread pitch and a reduced outer diameter of 4 mm. This serves to shorten the screw-in time. This is followed by another 4 mm long shank with a diameter of 3.5 mm. The end of the screw is formed by the conically widening head with a length of 6 mm. This increases the diameter at the end of the screw to 6 mm. The top of the head is slightly rounded and has a drive profile for T25 bits.
Like the screws, the matching T25 bit is matt silver. It has a length of 25 mm. With its hexagonal profile, the bit fits into standard bit holders.
Overall, both the screws and the bit holder make a very good quality impression. They are sturdy and very well made. The good quality and weather-resistant material of the screws indicate a long service life.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test is the most relevant and therefore the most important. 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*
Fitting the screwEasy to screw in thanks to thread up to the tip and sliding coating. Unfortunately, the screw cannot be magnetized.90 points
Use of the bitRobust and stable bit, fits well in screw and bit holder, does not slip out thanks to magnetizability100 points
Quality of the screw connectionHigh connection force of the screw, rounded screw head reduces risk of injury100 points
Total97 points
Weighting: 40%
*The maximum score is 100 points

A commercially available cordless screwdriver is used for the practical test. Although in principle it is also possible to screw in the screw with a screwdriver, it is much easier with a cordless screwdriver. Thanks to the thread starting at the tip of the screw, the screw grips firmly in the wood after just a few turns and starts to turn into the wood. The screws can be screwed in easily and without great effort. The anti-friction coating helps here. With soft wood, as in our case, no pre-drilling is necessary.
The conical countersunk head allows it to be fully countersunk into the wood so that nothing protrudes. However, a small disadvantage of the screws is that they cannot be magnetized and therefore do not adhere to the bit. This makes it easier for the screws to come loose from the bit and possibly slip between already installed decking boards.
The T25 bit supplied fits perfectly into the screws and into the bit holder of our cordless screwdriver. In contrast to Phillips screws, the bit does not tend to slip out of the screw by itself. This means that once the screw has been gripped, no axial force needs to be exerted on the screw during screwing, which makes screwing in very convenient. As the bit can be magnetized, it remains in the bit holder even if it is held upside down – as is the case when screwing in. After screwing in, the bit can be easily removed from the bit holder.
After screwing them in, we found that the screws actually grip very well and create a stable connection between the decking boards. It is not possible to get stuck on the screws, which are completely countersunk into the wood. This is particularly important as a terrace should also be able to be walked on barefoot . If a screw is not fully countersunk into the wood, the rounded shape of the screw head helps to reduce the risk of injury. As the screws are made of weather-resistant stainless steel , they should retain their strength and appearance even when left outdoors for long periods of time.
In summary, it can be said that the optimization of the decking screw in trials actually offers demonstrable advantages. Installation is simple and convenient. Even after installation, the screws impress with their rounded head and high-quality material. Accordingly, the screw and bit made a very good impression in the practical test.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we look at 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? We also examine consumer ratings and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioVery good quality in the mid-price segment80 points
Rating cut4.7 out of 5.0 on Amazon85 points
Total83 points
Weighting: 20%
*The maximum score is 100 points

On the Amazon platform, consumers have given the product an average rating of 4.7 stars. One common criticism is that the screws are made of material that is too soft and can break off. Many customers like the high quality of the screws and the ease of installation. In our practical test, we were able to confirm that the quality of the screws was good and that they were easy to screw in. No screws tore off in our test.

Prices of up to €63.90 are charged on the Internet for equivalent products. However, most products are in the €43 range. Very inexpensive products are available from as little as €15.90. The decking screws from INNONEXXT® are currently in the mid-price segment with a price of €31.49. The price ratio is reasonable for the quality and scope of services you get.

Overall result

WeightingScore achieved*
1. packaging & labeling10%100 points
2. package contents & instructions10%90 points
3. product processing & appearance20%100 points
4. in the practical test40%97 points
5. price/performance & consumer ratings20%83 points
Total94 points
*The maximum score is 100 points
Decking screws A2
of the brand
Edelstahl
achieved
94
Points in our test and therefore passed. The test was carried out in the test period
04/23
and is stored in our database under the licence number
230312003
. 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 observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments 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 reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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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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