Advantage Industries Interchangeable Neon Sign Base AD-510 Express Yourself With Neon SculpturesOne For Every Occasion Each Neon Sculpture Sold Seperately Includes 12V AC/DC 500mA UL Approved Transformer Snap-in by Pressing Down Neon Tube Plug Firmly into Base Socket To Remove Neon, Insert Flat-head Screwdriver Into Slot at Base of Neon Tube and Twist Gently