I’m replacing all of the cheap sliders on my cabinet pull outs, and got these because of the value price. When compared to the other 100 lb. capacity slides I used on the project, these are as well built. They also have a soft close mechanism at the back of each slide to prevent slamming, which the other more expensive ones didn’t have. They come apart and install just like you would expect from this style of slider, and they’re delivered with enough 1/2” screws to complete the project. You may want to use longer screws. They operate smoothly and almost silently. In the past I’ve had some of the bearings pop out of similar products over time, but the bearing carriers in these seem well-built so I don’t expect a similar problem with these. I have the 22” version and ordered a 6-pack, but they are available in different lengths and quantities. The 22” versions extend a full 21 1/2” beyond the frame when fully opened. I’ll be ordering some shorter lengths for another project.