2″ (50mm) Drain Descaling & Blockage Removal Kit

This drain cleaning kit is mainly used for blockage removal and descaling PVC pipes, such as shower and basin drain pipes.

Sewer cleaning flexible shaft kit with chain knockers for blockage removal


This kit is meant for blockage removal and descaling of 2″ (40mm) pipes.

It only comes with a 1/4″ (6mm) flexible shaft because the bending radius of this shaft diameter is equal to the bending radius of a 90 degree bend on a 2″ pipe. This will allow you to clean and descale pipes, such as the shower waste water pipes or a basin waste water pipe, and any smaller pipework with multiple bends and junctions.

You can select the appropriate chains to work in either PVC pipes, or cast iron pipes.

The chains that come with this kit are based on your selection. Tools for cast iron and clay have tungsten carbide blades fused to the cutting edge of the chains, and the chains which are intended for PVC pipes do not have hard metal bits.

The tool is lightweight and compact, so it can easily fit into a toolbox, and can be set up in seconds. Simply attach it to your drill, and you are ready to go.


Most clients report that they use this kit on day-to-day toilet blockages because the shaft is covered with a chemical and heat resistant sleeve which prevents damage to porcelain, so there is no need to remove a toilet bowl in order to reach a soft blockage in the toilet waste line if it is in close proximity to the toilet.

Blockage removal

Perfect for removing fat deposits in pipes connected to grease traps, or for removing soft blockages in bath waste pipes.


Besides blockage removal, this tool has the added capacity to descale pipes, so you can remove urine scale from a pipe faster, more effectively than trying to break it up with a jetting machine. This way, you will not find large broken up chunks of scale that have blocked the pipe further down the line.

Boiler cleaning

Many of our clients have purchased this tool to be used as a dry industrial tube cleaning system, for firetube cleaning and maintenance. Remove hard deposits in tubes using the centrifugal forces of the chains which keep the tool centered in the pipe. This ensures that the entire inner circumference of the pipe is cleaned equally.

The chains are made from stainless steel to prevent oxidation, and are fastened to the shaft with hex set screws, so they can be adjusted to accommodate slight pipe size variations.

The 6mm (1/4″) shaft included in this kit is our most flexible shaft, and yet our shaft does not compromise on rigidity. This combination of properties will prevent the shaft from coiling on the inner wall of larger pipes over long distances.

The shaft sleeve has friction rings to protect the ends from wear. The friction rings on each end prevent dirt from building up between the flexible shaft and the sleeve. This reduction of friction ensures efficiency and the longevity of your tool.

The kit includes:

6mm Flexible Shaft with Sleeve and Friction Rings

A drill to Shaft Adapter to connect the flexible shaft to your power drill

Mini Chain 40-50 mm pipe 6mm (1/4″) flex shaft (with tungsten carbide bits if you choose the cast iron option)

Lightweight Plain Chain (NO Drill head) 32mm/1.3″ for 6mm (1/4″) Shaft, (1 chain in assembly) – with tungsten carbide bits if you choose the cast iron option.

Lightweight Plain Chain (NO Drill head) 50mm/2″ for 6mm (1/4″) Shaft, (2 chains in assembly) -with tungsten carbide bits if you choose the cast iron option.

Before you order the longest length possible, consider this:

The 6mm shaft delivers best performance in lengths under 15 meters (49.21ft). A longer shaft has less torque delivery to the chains, and you need a bigger power source (drill) to get the same benefit.

Shaft shrinkage

When we manufacture the shafts we wind them in a long straight line. They are then wound onto a large diameter spool, and later cut into smaller pieces before we assemble them and deliver them to you. This means that when you first use your shaft, you might notice that the ends shrink a little. Usually this is more evident on the drill end.

This is perfectly normal since the shaft is subjected to the stresses of multiple bends and torque for the first time. After the inner strands of the shaft settle into their permanent position the shrinkage will cease. Usually this affects around 3” (75mm) on either end of the shaft. When you notice this, simply cut off the shrunken section with an angle grinder, and reconnect your chains and drill. It is not necessary to weld the ends, but if you prefer to do this please try to avoid too much heat on the shaft.

Lubricate your shaft before first use

Aviation law prohibits us from delivering products which could be considered flammable so we send the shafts without lubricant in the sleeve.

Please be sure to lubricate your flexible shaft before using it, 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.

We recommend that you use any kind of lubricant that can withstand high temperature. Common preferences are motor oil (not engine oil), Compressor oil, and paraffin.  On average you will need around 15 to 20 milliliters of lubricant per meter (about 0.23 oz per foot).

Here is a video we made on how to lubricate your shaft:

Points to note:

These products are intended to be used by trained professionals in the sewer cleaning trade only. They do not come with instructions. If you would like training please make contact with us, and we will guide you.

Product pictures may vary in color and design depending on the size and diameter that you order.

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