Exactly what I've got! Mine is "hedgehog" shaped, with a sturdy alloy handle.
I've got several different brushes on board for various jobs. All from agricultural suppliers. Good, cheap and hard wearing.
Visit your nearest caravan/mobile home store if it has accessory dept. Good telescopic brushes with hose attachment for £20 - £25 and cheaper stuff too. Great place for canopy snap poppers too. £1.65 a packet of 10 as opposed to £5 - £10 from some marine stores.