Ampronix ARS46 VESA® FDMI™ 75/100 mm compatible Weight range: 5 - 23 lbs/2.3 - 10.4 kg Minimum height: 31"/78.7 cm Maximum height: 45.5"/115.6 cm 11"/27.9 cm height adjustment range 21"/53.3 cm diameter aluminum base built-in 10 lbs/4.5 kg counterweight 4"/10.2 cm diameter dual wheel nylon casters (2 locking and 3 non-locking) for easy transition over uneven surfaces Knob for height adjustability Gas spring assisted for easy height adjustment A wide variety of accessories are available for additional components and cable management