The adjustable rack piece attached to the main part of the rack with 3 clips. I had the larger one on the side of the basket, & ordered the other 2 when I ordered the rack. I took the basket out of the dishwasher, so it was easier to work on. It was pretty simple to attach, although I had to take the main clip off the rack to attach the side arm of the adjustable piece & then reattach. Also I was a little stumped at first as to how the smaller clips I ordered attached to the rack. Each way I tried to connect them between the basket & the adjustable piece it was too loose. Luckily, the upper rack had an adjustable piece with the same type of clips & I could see how it attached in a “cross” pattern on top of the basket.