This is a Wedge used primarily in the automotive industry. The main purpose is to spread the window opening (near belt molding) open so you can slide lockout or Paintless Dent Repair Tools down the door. Our One-Of-A-Kind Wedge is designed with a super bright LED built in which illuminates the entire inside of the panel. It is also handy doing R&I (Remove and Instal) procedures and many other applications. You will love using your Wedge Light The battery life is insane and it is fully rechargeable. (Battery and Charging cord included). There is an auto-shut-off feature built in so if you forget and leave it on or it accidentally gets bumped, you will not return to a dead battery. The charging port illuminates green when sufficiently charged and turns red when only 10% life is left. When charging, the On-Off button will illuminate red until fully charged at which point it will stop illuminating red. See what you are fighting inside car door panels! See it all: Bracing, Intrusion Beams, Lock Assembly and Rods, Sound Deadener, and any other obstacle in your way. This is a sturdy piece of equipment and will last years but we recommend not prying with it as it is a sophisticated piece of electronic equipment. You wouldnt hammer a nail with an iPad. You will wonder how you got by without this beauty in your life up until now! *U.S. and International Patents Pending