QwikLED by Magic Plastics adapters allow you to quickly go from an old 500-watt power hog dome style pool light to any 1.5" threaded modern LED light.
Use the QwikLED Plaster adapter If you plan to apply plaster to the QwikLED. This is typically for people doing a full pool replaster and at the same time changing their old dome style pool light to a new modern LED light.