Gardiner brushes can be used on them I’ve stuck one on mine I’ve also installed a Uni valve but it’s tricky compared to a Gardiner pole,if you get one make sure you get a few of those brush stock females so you can interchange a few brushes without having to undo screws everytime you want to change a brush.
The only thing I’ve found with the Ova is that even when the sections wear they don’t slide shut on there own by just releasing the clamp,you have to physically slide the section away each time.
The Extreme Gardiner pole is way ahead in terms of weight and the way it closes its sections effortlessly.