This is my first ever dado blade set.  It is on my Ridgid 4512 10-inch table saw.  I installed the blade and built it out to 3/4" as I believe that's about the max width I'll use on a dado cut.  It cuts perfectly in conjunction with a Leecraft Zero Clearance Insert.  I find the cuts to be quite flat on the bottom as do many other reviewers of this item.  The photo of this item is not correct.  It is actually silver rather than black.  the big box store "Big Orange" sells the exact same blade but theirs is red and carries Diablo as its name.  It is model DD208.