This giant mirror ball has an enormous 20" diameter. It's big... we swear. It is covered with thousands of precision cut silver chromed mirrors that scatter light with nearly zero intensity loss. The ball comes with a pre installed heavy duty hang ring perfect for ceilings or rafters. This ball is large enough to cover an enormous dance floor and is large enough to light an entire ballroom and medium sized club or bar! Great for home use! Our best-selling disco balls are now available with high quality motors that spin your ball for a real ballroom effect. The motor is battery operated, cordless and can easily mount to any ceiling. Add your disco ball motor to your order by choosing "yes" option above!