SWIT GA-GT15P | Precise Positioning Pantograph hinge (for rail track), max 23kg load, 1.5m length, no rail track. ---~2 months LeadTime if no stock High-strength aviation aluminum Pantograph for rail track (for hook is another SKU)Strong hanging load (3Kg-23Kg)0.5m - 1.5m expansion lengthsteps counter balance adjustStay in any position with precisionProvide cable organizer on rear sideConnect with rail track by screw boltConnect with studio light by screw bolt