I was expecting these strips to be fairly lightweight given the price they're sold at, but I was pleasantly surprised! They are incredibly well made, solid and quite weighty. I have used these in a cabinet I'm making and it was very easy to affix them.
Overall, you really cannot go wrong with these. I will definitely buy them again when I make my next cabinet. My only wish is that they would also offer them in a 4U size as that would be handy too. I know I can just cut them down but I fear that it would take forever as they're so well built! :)