This ETC Source Four 575 10 Degree Ellipsoidal Light comes with a stage pin. However, it doesn't include a bulb or a C - clamp.

To use this ETC Source Four 575 10 Degree Ellipsoidal Light, first, connect it to a power source using the stage pin. You'll need to buy a suitable bulb separately and install it in the light. Also, you may need to get a C - clamp to secure the light. When using, keep it away from water and other liquids to avoid damage. For maintenance, regularly check the stage pin for any signs of wear. If there are any loose parts, tighten them carefully. And don't forget to clean the outer surface of the light with a dry cloth occasionally to keep it looking good.