Replacing an old curved drawer slide. As other reviewers point out, this slide looks solid and solid, but comes with no mounting screws or instructions. I installed it and it was a bit tethered as the very old design was a little crooked. It took some effort to remove the box and several ball bearings fell out of the mechanism. Then it became useless. Went to Lowe and bought them Item #380980 Model #TU99072G22. Costs a few euros more, but comes with screws and instructions. Worked perfectly the first time. This item would probably work great for an absolutely perfect boxy new build, but for what I needed, a waste of time and money.