SWIT Precise Positioning Pantograph hinge (for hook)

High-strength aviation aluminum Pantograph for hook (for rail track is another SKU)
Strong hanging load (3Kg-23Kg)
0.6m – 3m expansion length
9 steps counter balance adjust
Stay in any position with precision
Provide cable organizer on rear side
Connect with hook by screw bolt
Connect with studio light by screw bolt