The Eliminator Lighting MBM1RP mirror ball motor safely supports mirror balls up to 16 inches. It has a very desirable slow rotation of 1 rotation per minute. This allows for an optimal effect as hundreds of beams of light slowly move around a room when a pin beam fixture is used (lighting fixture sold separately). The MBM1RP is ETL approved for electrical safety allowing installers and event producers peace of mind. The compact size and weight, and 3 mounting holes make for easy installation into nightclubs, fun centers, event centers, lounges, and bars for indoor use only. The MBM1RP includes a 7.5-inch chain that connects to your mirror ball. The chain may be adjusted depending how close you want your mirror ball to the motor.