WHITE SPRING LOADED TENSION ROD 56-91cm (22-36") For light Weight Nets & Voiles - Curtains At Home

Hello, How much is the diameter on edges? As i am buying curtains with with 1.5" in diameter, so wondering if they would go through this rod?

Do you have any idea the extent of the weight that each sized rod will support? And are they returnable if I find them unsuitable?

Is this item really spring loaded as stated in the description or do you just twist it to the size you want?

Wanted this rod to hang light curtain on front door seller email mr saying it not for that yet review on amazon say fine for it ???