Welcome to the Wonder Rat website

We are currently re-designing our full website to show our new drain lining systems.

• Wonder Rat OneLiner


A fast, compact system for blown-in lining.

• Mk2 CaliBag

The CaliBag has been re-designed and is now re-usable!



The OneLiner and the Calibag are each fitted with a launch-bag which is used to drive a blown-in liner into a drain or an inflation-tube into a drag-in liner. The liner is then pressurised using a re-usable inner-tube.

A video demonstration of a 3-metre re-usable CaliBag is available to view below. The OneLiner is blown in and pressurised in a similar manner.