The LS3 Air Stand is constructed of lightweight yet strong aluminum. It uses a reliable air cushioning system in all column riser sections to prevent accidental 'falling' of a light. The column locks are strong and keep their adjustment over time. And the flat black finish will avoid unwanted / unexpected glare and highlights during a shoot. Maximum Working Height: 9' / 2.74 m Minimum Working Height: 40" / 101.6 cm Folded Length: 38 5/8" / 90.5 cm Weight: 4.2 lbs / 1.9 kg Leg Size: 22mm round Main Column Diameter: 35mm at its widest section Mounting Stud: Universal 5/8" with 1/4-20" male thread Finish: flat black Maximum Load: 5 lbs 8.2 oz / 2.5 kg