If you need the a motor that will cover those mid-size mirror balls, then the M-103 is the motor you are looking for. Supporting mirror balls 16 inches and up and up to 25 pounds is an easy task for this motor. Let your mind be at ease knowing that your mirror ball is safely supported by the M-103 motor from ADJ.The M-103 motor will rotate those mirror balls with ease at a steady 3 R.P.Ms. Making sure that your audience experienced that classic mirror ball light effect. The M-103 motor is meant for indoor use only but is great for night clubs, mobile entertainers, bands, and permanent installations.So when you are setting up that next prom dance and need the assurance that your mirror ball will operate as expected, use the ADJ M-103 heavy-duty pro mirror ball motor. ETL Approved.