It is very sturdy and easy to assemble. It is easier to assemble with another person to at least hold the bars in place while tightening. I would've given it 5 stars however, if you are tall this isn't the best mechanism for you. I am 5'5 and it works fine for me it is not a struggle to reach up for the bar but my husband is about 5'9 and his hands meet right above the bar. He is able to use it in a kneeling position but not standing.
I would recommend this to a friend!
Written by a customer while visiting staminaproducts.com