Update 30th November: 2 slides blew up after 2 weeks of use. Me give them back. I'm surprised how many bearings are used in soft close guides at this price. For the same money I can buy a maximum of 2 pairs of such rails in HD. I use them on my miter saw. You can see that the drawers are 1/2 plywood filled with tools - yes they are heavy and the rails hold up well!I'm happy with the money spent.