E-IMAGE HSB300 heavy duty wind-up stand with Cranking Handle Extension Arm & Locking Wheels employs three locking wheels for 360° swivel movements. The stand section supports light fixture loads up to 66.1lbs (30kg), to a maximum height of 155.5 inch (3.95m). The geared column and crank provide mechanically assisted lift. Boom Arm made of steel, extends up to 145.7in (3.7m)