The black Prolene scrubbing brush. They are similar to the brush in the photograph. They will also fit the Advance Warrior

The price is per piece and two are needed for a set. They click on with 3 studs into 3 slots, two which are equipped with spring clips to retain the studs

Prolene (Polypropylene material) is for medium-duty scrubbing on concrete, terrazzo and vinyl floor tile. Recommended for use in place of green or blue pads

At the moment, standard postage within Australia is capped at a maximum of $25 so maximise the saving on postage and buy some of the related parts below!