Strong alloy steel construction, 6-1/2 ft Max. fully extended height and 2-2/5 ft Min. heightCrossbar Adjustment Range: Min: 5ft(1.5m); Max: 10ft(3m); Each Bar Length: 2.5ft(0.75m)Extra wide footprint with rubber tips for more stability.Simple press-to-lock locks provide fast precise height adjustment.2pcs Background Clamps can clamp 2" max. thicknessStrong alloy steel constructionFolding frame design for freewill lighting position setting and easier storageStrong support capacity but lightweight1x Backdrop Support Stand(include crossbars and 2x tripod stands)2x Background Clamps1x Carrying Case6-1/2 ft Max. fully extended height and 2-2/5 ft Min. heightCrossbar Adjustment Range: Min: 5ft(1.5m); Max: 10ft(3m)Each Bar Length: 2.5ft(0.75m)21-25mm Diameter of the crossbar to fit your backdrop wellSimple press-to-lock locks provide fast precise height adjustmentExtra wide footprint with rubber tips for more stabilityCan Clamp 2and#034; Max. ThicknessWith Moveable Clamp Teeth to Hold Backdrop or Other Items tightlySize(LxW): 4and#034; x 2-3/4and#034;Built-in small pocket for instrumentsPortable and convenient to anywhereSuitable for one set of background support stand