SWIT GA-PT50P | Precise Positioning Pantograph hinge (for hook), max 23kg load, 5m length, no hook. ---~2 months LeadTime if no stock High-strength aviation aluminum Pantograph for hook (for rail track is another SKU)Strong hanging load (3Kg-30Kg)0.6m - 5m expansion lengthDMX motorized stretch control10cm per second moving speed5-pin DMX in & loop outSpeakON AC power in & loop outProvide cable organizer on rear sideConnect with hook by screw boltConnect with studio light by screw bolt