Rockler - Dust Right FlexiPort Power Tool Hose Kit (Rating: 1)

I bought this adapter set in hopes of connecting at lease SOME of my small power tools to my 2 1/2" shop vac but it doesn't fit anything and the hose is far too heavy to be useful. I have got to quit buying stuff from Rocker as I have never found anything that I am satisfied with when buying their brands. Just another disappointing waste of money. Why can't too makers coup with a standard size?