Seems like a bargain for a set of presure washer brushes and there is plenty of stock available.
* 1 fixed brush.
* 1 rotary brush.
* Compatible with the Challenge 1500W, Challenge Xtreme 1800W and 2000W pressure washers and via an adaptor (not included) with the Challenge Xtreme 2400W pressure washer.
* Would guess that this would be compatiable with many other units TOO