Good old Freud blades.  These are sharp, well balanced, and silver! The picture is not right, its a silver set.  And for those of you like me that have used this Dado stack for years, it has changed a bit.  Now, there are fewer chippers, with wider teeth and more shims.  It still works just the same, and is maybe even a little easier, because there's one less chipper to put in the stack and take out.