Drain Cleaning Kit, Maximum Torque

This kit is built around a 12mm (½″) flexible shaft, designed for maximum torque and the most demanding drain cleaning tasks. It is intended for professionals dealing with heavy scale, stubborn blockages and larger pipe diameters where maximum cleaning power is required.

Important: This kit requires a cordless drill (not included) to operate. [See our guide on choosing the right drill →]

Compared to thinner shafts, the 12mm (½″) option delivers the highest torque, making it the most effective choice for aggressive descaling and removing hard, compacted buildup. This level of power comes with quite limited flexibility, so it is best suited for straighter pipe runs and situations where access is less restricted.

Start building your Kit by choosing the length of the 12mm (½″) flex shaft, which acts as the backbone of the system. From there, compatible drill to shaft connector, chain knockers and accessories are added step-by-step to create a complete heavy-duty toolset. All components in this kit are specifically selected for the 12mm shaft to ensure proper fit, stability and efficient power transfer.

This type of setup is commonly used in:

• Larger diameter pipes
• Heavy descaling and restoration work
• Pipes with minimal bends
• Jobs requiring maximum torque and cleaning force

The 12mm (½″) shaft delivers the highest level of power in the range. It is built for situations where lighter setups are no longer effective and maximum force is needed to get results.

If you need more flexibility, consider:
Drain Cleaning Kit, High Flexibility | 6 mm (¼″) Flex Shaft
Drain Cleaning Kit, Balanced Power | 8 mm (⁵⁄₁₆″) Flex Shaft

If you need a slightly more flexible high-power option, consider:
Drain Cleaning Kit, High Torque | 10 mm (⅜″) Flex Shaft

This Kit allows you to assemble a complete maximum-power drain cleaning setup, with all components designed to work seamlessly with the 12 mm (½″) shaft platform.

This is a build-your-own kit, so the contents of your box depend entirely on the options you select. The product images are for illustration purposes only and may show items not included in your final selection.