6 Pairs 18-Inch Undermount Soft Close Drawer Slides - Full Extension Concealed Drawer Rails with Mounting Screws, 3D Locking Device & Brackets | Perfect for Kitchen Cabinets, Dressers & DIY Furniture Projects

This was my first time using undermount slides. I have always use (cheap) sidemount slides in the past. I've had such bad experience with those things, at one point I vowed to never build a drawer again.On a cabinet build for the kitchen, and wanted something a little higher end. To be honest, I bought the undermount because they are hidden when the drawer is open... classy. However, I am blown away by the ease of install. I will never buy a sidemount again.Now, these are more expensive than Euro slides. This 6 pack of slides was perfect for me, and they were only 2x the cost of the cheapest sidemount slides you can get at big box store. 2x is a lot, but on the balance of the entire cost of the cabinet, it's not that bad.The install is dead simple though. This product provides the rear support brace is you are building a face-frame cabinet. With sidemount slides, those cost extra. But, unlike sidemount sildes, there is really only one piece in the slide assembly. There is no cabinet and drawer member. The entire slide assembly is installed in one piece. So, as long as the two slides are parallel, you're golden. The locking mechanism which is installed on the drawer box is 3-way adjustable, so if your drawer is a little off on width, you're still good. Contrast that to sidemounts. If you're off by 1/8" in any direction, you're screwed, and they won't work.Listen, I suck at drawers. But, I just put in 6 without having to make a single adjustment. That should speak volumes. The soft close feature on this product is a nice touch too. I cannot compare these to the more expensive name-brand version, because I have not used them. However, these seem like exceptional value. Again, the locking mechanism is 3-way adjustable, just like the more expensive versions. Also, these things are SOLID. The 6-pack of these things might weight like 35-40 lbs.The instructions were ok. They tried to make a drawing to permit the drawer material to be various thickness. But... it's super easy. Your drawer sides are as long as the slide length, e.g. 18". Then, your drawer front is the edge-to-edge width of your installed slides. That easy.5* would... and likely will.. buy again.