Expensive, yes. But for a house with old hot water radiators and a flock of cats, it is very necessary. Got this so we can do a thorough cleaning inside/under the radiators before we turn the heat on. I found the bristles were catching a clump of cat hair/lint so I had to remove this mount from the wand tool, vacuum and then reattach. However, it worked well and was just a small extra step. The bristles seem durable and now that I have this accessory I will be cleaning radiators more often!