1. Light stands are fully adjustable from 3 ft to 10 ft high 2. Cross bars can be set to 5 ft, 7.5ft or 10ft wide. The stands are fully adjustable with its precision locking mechanism.Tipped feet prevent slippage Aluminum alloy construction Max length: 10 ft (4 crossbars) Min length: 5 ft (2 crossbars) Spliced and telescopic cross bars. Width adjustable (Min 5ft – Max 10ft), easy to connect, no sag when hang backdrops within 15 lbs, safety use Mount bracket The crossbars are a heavy gage metal and very rigid. Width adjustable (Min 5ft – Max 10ft), easy to connect, no sag when hang backdrops within 35 lbs/each set, safety use Muslin clips Free sandbags for the stands 3 pcs 4 inch spring clamps