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FAQ’s

General enquiries

We deliver the tools worldwide directly from our workshop in Finland with a fast and reliable courier service.

All our tools are specially handmade by experienced artisans.

If you are located inside the European Union please use our store dedicated specifically to the EU: https://zewer-tools.com/products

If you are visiting from any other country please continue using this website.

When we deliver products outside of the EU, we are obliged to send the goods without taxes. When your package arrives, the courier will clear the package with customs, and charge the appropriate taxes. In most cases this fee is VAT (Which is refundable when you submit your VAT return.) 

In the USA, the de minimis rule applies since the products originate from the EU. Products purchased under the value of $800 should not attract taxes. 

In Australia, duty and taxes kick in after the first USD 1,000. 

To learn more about this rule, please visit https://www.trade.gov/de-minimis-value

In addition to this, the customs department charges a nominal tax. Please check the tax rate to be sure. (HTS code 8207.90).

Whilst most countries are not affected, we are aware that in a few countries, the courier service charges a fee to submit your paperwork to the customs office. This is rare, but feedback from clients has taught us that in the UK the cost is around 13 GBP , and in Israel the cost is around $20. In Serbia the fee is around $15. If you would like to be sure, please contact us and we will ask the courier to give us information on the topic.


About our tools

Please be sure to lubricate your flexible shaft before the first use, and then check the lubrication every few weeks. This not only ensures the longevity of your shaft, but also makes it more efficient over longer distances.

Our preference for lubricant is basic machine oil. The reason we prefer using this is because it is capable of remaining stable in high heat. Many clients have reported that they use graphite grease, because it is cleaner, but personally we have never used it. Another less common option is compressor oil. The important thing to note is that you can use any type of lubricant as long as it doesn’t break down when it is heated.

We have created a video which shows how to lubricate your shaft: https://www.youtube.com/watch?v=QPiVGudr_L0&t

The main difference between these two is that carbide brushes have tougher bristles and can be used to remove harder encrustations or to prepare a damaged pipe for relining. The nylon brushes are perfect for any clean out operations you may want to do, such as removing dust. You can also use nylon brushes for spray coating of a pipe with epoxy. Remember, it is always wise to add a brush lock on each side of your brush.

There are two main factors to take into consideration when choosing your drill.

The first factor is torque and speed. The drill must be able to provide between 70NM and 200NM of torque. It must have variable speed settings that allow the drill to spin at an rpm of between 700 and 3000rpm. That being said, the most common range is between 900 and 2500 rpm. At 900 RPM and below, the chains will bounce around on the inside of the pipe, while from 1000 upwards, the chains will start to centralize themselves using centrifugal force.

The second consideration is that the drill must have a slip chuck (torque limiter). This will disengage the drill when you hit a solid obstruction, especially during descaling, and prevent your shaft from kinking. While it is not a hard and fast rule, the chances are that a metal chuck is usually indicative of a better quality torque limiter.

While you can use higher speeds, you also run the risk of snagging a chain on a solid obstruction, which increases the chance of torque limiter not engaging in time.

It makes no difference whether you use a corded or a cordless drill, but please remember that if you choose a cordless drill, you should get extra batteries so that you don’t need to stop your work to charge the batteries. Another important thing to keep in mind is that most cordless drills max out at 150NM of torque.

Descaling tasks require more torque than blockage removal tasks.

Thinner shafts require less torque, and thicker shafts require more torque.

Additionally, longer shafts require more torque than shorter ones, so please take all of this into account when choosing your drill.

Many clients use a car polisher with the half-inch shafts. Instead of a regular adapter, they use our shaft-to-shaft connector with 14mm (35/64″) on one end and 12mm (1/2″) on the other end. Bear in mind that the polisher doesn’t have a torque limiter, so you run the risk of kinking your shaft.

Our recommendation for the drill is:

Cordless drill – The DCD 799 or DCD805 Dewalt 

Corded drill – Makita DF0300 10mm Drill Driver

We can make any length up to 35 meters. This can be done with a custom order which we place manually because the website only has options 5,10,15,20 and 30 meters. We do not recommend a shaft longer than this because at a length above 35m, the torque is very little and performance much limited. We rather recommend our customers to join two shafts of shorter lengths as opposed to getting one very long one. This will also offer the advantage of having less to carry around and keeping a spare shaft in your car as a backup or add on.

In PVC pipes – For descaling smaller PVC pipes of diameter 50mm (2”) or less, we recommend using the plain chains and the mini drain chains for both descaling blockage removal.

For PVC pipes with a diameter that is 75mm (3”) and above, we recommend using the circular chains with no hard tips for descaling, then the plain chain knockers with a drill head for blockage removal.

In Cast iron pipes – For descaling smaller cast iron and clay pipes of diameter 50mm (2”) or less, we recommend using the x-tip chains and the mini drain chains with hard metal bits for both descaling and blockage removal.

For cast iron and clay pipes with a diameter that is 75mm (3”) and above, we recommend using the circular chains with an extra drill head for descaling, then the x-tip chains with a drill head for blockage removal.

The main difference between our regular chains and circular chains is that the circular chains have a fixed diameter and will clean out the entire inner circumference of the pipe wall which makes them perfect for descaling.

On the other hand, our regular chain knockers are more suitable for blockage removal.

You can use a regular chain for descaling, but please note that it will take you a bit longer to achieve that goal compared to using a circular chain.

If you are accessing the sewer line through a toilet with a rooting machine, you probably know how much effort and time goes into removing and replacing the toilet pan.

You find yourself struggling in a confined space, and there is always the risk of getting a leaky connection when you are done.

Our flexible shaft is covered with a chemical and heat resistant sleeve which prevents damage to porcelain, so there is no need to remove a toilet pan in order to reach a soft blockage in the toilet waste line in close proximity to the toilet.

The important thing to have in mind is that you shouldn’t start the chains until they pass the porcelain and get to the sewer pipe because they can damage the porcelain.