These superbly made track lights from Cini & Nils are an original and beautiful design solution. They are a mains halogen fitting, and do not need a cumbersome tranformer. This means you can put as many lights on the system as you like, and they can be dimmed. There are 2 circuits, so you can dim them seperately. They are beautiful, simple, flexible, economical in their use of space and Cameron Peters can't recommend them highly enough.