A brand new 4 months old SX 7 Position USB Filter Wheel for sale - Going Cheap !!!.
It will come with either 36mm or a 1.25" filter carousel.
If interested, please email me at ntk.thava@gmail.
Technical information form:
http://www.sxccd.com/sx-usb-filter-wheel
You can view some of the images taken with this filterwheel on my Astrobin page:
http://www.astrobin.com/users/ntk.thava/