You can’t put heavy item on there as it stretches the line. Item was delayed without explanation. Was supposed to have two line tightening devices attached to the frame however mine only had one. So I had to go buy one to tighten the line on the other side. 
That device is a permanent fixture to keep the line tight.  I’m not happy with the overall size of the product. Difficult to pin the clothes as the lines are so close together.  I should have bought a rotary clothesline.