I guess they ran out. I hope people didn't abuse it to sell separately. I only got one set for personal use (y)
bissel have got the tool on its own for £12 + postage, but can't see much point to it as you could just put diluted oxy bleach in a spray bottle and use the regular tool to suck it up. https://www.4bissell.co.uk/deep-cleaners/power-brush-tool/product.pl?pid=1937308&path=606373
Would of purchased but shows currently unavailable
I'd order but I've got a Vax carpet cleaner, shame cos it's a brilliant deal.