Hi Len
yeah a porty vac hose fits straight in to the internal of and RX hose fitting, not the best air flow with the reduction of the cuff but works a treat.
Ahh that stool is from the wetherspoons in Boston, black top even on the back of the bench seating,
As for the cost of the hard floor attachment, how much is it

I borrow mine, infact I think that pic was taken when I was working for someone else, but would highly recomend it if striping and sealing alot of floors or deal with acid descaling etc but I know most people are a bit affraid to get there hands dirty or work to hard lol

James