I picked up several of these and other sizes of this slide while they were in the outlet. For the price (<$2/pr) these are really great basic (no frill) slides. They don't come with instructions, but it isn't difficult to figure out. I think this is the third or forth time getting this same brand/type of slide when they were on sale and I've used them for all kinds of projects ranging from shop drawers, home projects and even some light weight drawers for clients. They are fairly sturdy but I really don't think I'd subject them to the 100# rating for long periods of time.