500 LB Heavy Duty 3600 Series Full Extension Drawer Slides 16 Inch - Locking Mechanism for Secure Storage | Ideal for Tool Chests, Kitchen Cabinets, and Workshop Drawers

The good:They are very solid - you literally can stand on them once installed.Compatible with 80/20 extrusion systems - there are holes all the way aft on 1/5 centers !Smooth, reliableThe bad:Fairly finicky & difficult to set up - HOWEVER most of that is on how they are installed there is a learning curve that is not the fault of the product. These install much better in metal than wood !Not so great with drawer facades - work better with the ends exposed.They do not separate - this makes installation / adjustment extremely arduous. It is unfortunate they have not figured out a way to do allow the drawers to come out once installed.We build custom cabinets for adventure vans - and often, we use drawer fronts / facades on the drawers to conceal the contents - well the tolerances are so tight on these rails that even a few thousandths off makes them impossible to latch or unlatch smoothly. Its caused us a lot of grief so now we are no longer putting facades on our drawers - this gives things a more industrial look but most customers are OK with it. I do not recommend facades at all on drawers.I have revised this review after using several products from other manufacturers - this one BY FAR is the best solution albeit not perfect. The manufacturer stands by their product as well - we had one issue they fixed it immediately. We no longer will use any other product but this one - we just wish they would make the sliders able to separate it would make things much easier.Pics - note drawers with facade (hidden framework) and non-facade (framework exposed) the latter is a MUCH better application of this product. Also - do not install these in wood unless you use bushings or EZ-LOKs.