These lights are amazing.  t is made to fit perfectly over any quilting frame, sewing table, or work area! The TRUE–COLOR light–balanced bulbs enhance the details of your projects. The Luminess is adjustable in height and width and is available in two sizes: large and small.  If you have a 12-foot frame, you need the extensions. These work great, especially at night.  We love love love them.
 
There are three sizes:
Small:  for Q-zone hoop frame (up to 6 feet)
Large: for Continuum and Q-Zone Queen (up to 11 feet)
Extra-Large: Large plus Extra 2 feet for 12' frames