Hercules SS100B Quick-N-EZ Speaker Stand Adapter Brand: HERCULES Weight: 0.75 kg (1.7 lbs.) Folded size: 170x 80mm (6.7x3.1") The Hercules Stands SS100B Speaker Adapter is Quik-N-EZ. It automatically expands from 1.38" (35 mm) to 1.65" (42 mm) to fit your specific speaker bottom holes