This is a white light and an air jet combined into one piece which is designed to go at the bottom or the sides of whirlpool baths, hot tubs and swimming pools. A 30mm thread mounting hole is required for fitting. The main lighting fixture is approximately 40mm in diameter. A 10mm internal measurement pipe is required for fitting over the 10mm connecting piece at the back of the jet. Feature There are wires with a different connector on each. Both are 2 pin connectors, one female and one male, therefore this light will fit either connection you have. Please inquire with us if you have questions regarding Hot Tub and Whirlpool Bath Spares. + Chat with us on WhatsApp (contact info: 07754 173340). + Email us. Di Vapor is your friendly spares expert We are at your service.