The Pro-Lok 9.6 volt halogen lighting kit is so powerful and bright with a 6volt super light probe and 9.6v Makitar battery holder. Just plug into theadapter and plug the cord into the wand, then insert it right alongside thewindow wedge, and finally lower into the door and set in position. A handy beltclip on adapter provides hands-free operation. It is used with the battery adapter AL3009 Probe light comes with 6 volt halogen bulb included Battery not included