I am a big fan of SFactor. Excellent (advanced) core exercises with FUN:-)
The SFactor site provides info about poles: http://www.sfactor.com/product_pole.asp

Quote: "The Pole is very easy to install. It takes less than 10 minutes for the initial installation. And weighs a mere 20 lbs. Our simple design incorporates a unique ceiling mount, disguised as a plant hook for discretion, that requires only a single screw. A threaded compression system holds the dance pole in place. It can handle a person up to 250 pounds. When the pole is put away all you have left is a functional plant hook in the ceiling. After initial installation it takes only seconds to put up or take down, with no tools needed.
The removable nature of our product offers the flexibility of only having it in place when you want to use it. You regain the space in your room when it is not in use. You can simply store it under your bed, behind the couch, or in a closet when finished. If you prefer, the pole can easily be made permanent."