SWIT Precise Positioning Pantograph hinge (for rail track)

High-strength aviation aluminum Pantograph for rail track (for hook is another SKU)
Strong hanging load (3Kg-23Kg)
0.5m – 1.5m expansion length
steps counter balance adjust
Stay in any position with precision
Provide cable organizer on rear side
Connect with rail track by screw bolt
Connect with studio light by screw bolt