Don't make the mistake I did.....I went to Walmart to save on shipping charges and bought a barbell separate from the weights. Unfortunately the bar I bought was the type that has screw-like threads at the ends. The plates stay on by screwing a giant like bolt on the sides. By the time I unscrewed the "bolt" Cathe was already on her 5th rep of the next exercise. I noticed that she does NOT unscrew anything, but uses clips and the weights come on and off much more quickly. So, I ordered the Troy lite bar that so many have recommended....and will return my other one.