(as of 11/28/2019) This adapter fits the components of my Fein Turbo II that came with attachments. Specifically, this adapter fits the end of tool adapter hose, elbow end of hose or pipes. It fits snugly onto the rubber end of the tool adapter. In my original review I didn't think it would fit the tool adapter. It fits, you just have to press hard and twist. This is a good combination, suitable for Elbow or Fein wands. Now, in addition to the fine attachments, I can continue to use my 1 1/4β³β¦