Review on Knobonly 21" Soft Close Full Extension Drawer Slides - 10 Pairs With Locking Device Included And 85 Lb Load Capacity by Jay Chenier

I used this to replace a soft close that had some parts missing (I accidentally tossed?) for a new RTA cabinet.This was the same exact match. The guides are a good heavy quality metal. The directions are basic and could be more detailed for some but I already knew how it installed. These do need space underneath the drawer to attach or otherwise you might need the side attachment soft close hardware. Therefore, check your cabinets. If you have an older style cabinet it may not work. This worked really well for me and I had it installed in 10 minutes and the cabinet drawer works well now.