3 legs hand crank sit and stand office lifting column legs t

TECHNICAL PARAMETERS:
? Adjust range (vertical): 685-1170mm
? Adjust range (horizontal): 1100-1600mm
? Speed (mm/circle): 5
? Max. load capacity: 80kg
? Desk frame Colour: Black, Gray, White
? Desktop Size (mm): 1500*1500*600
? Lifting column size (mm):
Outer Tube????50*80mm
Inner Tube: 40*70mm
? Column Material: Q235 steel
? Warranty: 5 years for desk frame
? Desktop Color: black, white, maple
3 legs hand crank sit and stand office lifting column legs t