This is only a *REPLACEMENT* bulb w/50' cord for Underwater Fish and Dock Light Kits. Fits many brands of 175 watt HID underwater lamp systems. If you unsure if this lamp will fit your current system, please contact us prior to ordering to find out if this bulb will work in your underwater light kit. This bulb must be connected to a correct size transformer, it can not be directly plugged into 110 volt outlet. Warranty does not cover incorrect application. We ship our orders the same or next business day. Please ask compatibility questions if unsure prior to ordering. These Replacement Lamps are hand made by Green Glow Dock Light, LLC. Additional Details ------------------------------ Product description: This is only a *REPLACEMENT* bulb w/50' cord for Underwater Fish and Dock Light Kits. Fits many brands of 175 watt HID underwater lamp systems. If you unsure if this lamp will fit your current system, please contact us prior to ordering to find out if this bulb will work in your underwater light kit. This bulb must be connected to a correct size transformer, it can not be directly plugged into 110 volt outlet. Warranty does not cover incorrect application. We ship our orders the same or next business day. Please ask compatibility questions if unsure prior to ordering.