Rolling springs and 'C-class' wire brushes are highly suitable for pipeline and pipeline coating inspection

Each spring comes with a detachable coupling, allowing users to quickly connect or disconnect the rolling springs on the support column.

There are two types of rolling springs, phosphor bronze circular springs and 304 stainless steel square tube springs. A 19mm (0.75 ") diameter phosphor bronze spring is almost three times lighter than a 34mm (1.33") diameter stainless steel spring

Suitable for measuring ungrounded pipelines. The conductive rubber pad is wrapped around the coated tube and connected to the grounding pin (provided separately) and signal feedback line.