Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: what is an arbor size on this set.
Document: I had to use a different arbor than the one provided to use the saw. I would use this set again for a rough application, but not for fine woodworking.
After all the gripes and complaining about what kind of box these are packed in, I was a bit leery about the true quality of the blades. But I was indeed pleasantly surprised to find out my doubts were unfounded. They have turned into a true pleasure to run. A bit more complicated than my last set but then too they are about twice the quality of cut and precision. I have yet to have to add any of the well made shims to correct the cut size.
The first time I set up my shiny new dado set, I found that two of the chippers were either out of round or had some other reason for refusing to slide onto the arbor. Gentle persuasion was the first approach. Patience and more wriggling than the law allows produced no better results. After extensive frustrations,I yielded to my baser instincts and tightened the arbor nut, with the intention of forcing alignment of the components,  but with the predictable result of a broken blade.
Decent quality blades for the price. They will service my needs just fine. They did not come in the case as shown but rather in a plastic case which is still ok but not as nice as the one shown. The instructions were a little confusing and the photo's small but after I finally got the blade installed to the size I wanted it worked well. The next set up will go much quicker now that I have done it once. The width of the cut was very accurate.
I like this dado blade setMibro 416371 8-Inch Stacking Dado Blade Set. I picked the next size smaller blades for my table saw since I was not going to be making grooves three inches deep and I figured a smaller diameter would only improve the marginal torque of my table saw.Have been using these off and on for a year now and have no complaints related to the blades quality.
I received my set yesterday and the box was trashed to start with. (broken in shipment in spite of being packed pretty well. I tried it out last night, the instructions state that the two outer blades stacked together would cut a 1/4" dado, well it was .035 under size. the cut was OK just not as stated so the blades are under1/8" each. I wish that I had saved my money and gotten another set such as Freud.
normal dado blades you can adjust to any size cut, not these if i use just the regular saw blades i get a smooth cut. not  with the other blades. do not recommend, buy something else.
Manufactured to very poor specifications, very difficult to install, spacers have poorly punched arbor openings with very jagged burrs. If you want quality do not look here.
There are two thicknesses of shims, ones that go between the inner cutters and slightly thicker ones for the inside edges of the outer blades. For the wider thicknesses you do need to check the length of your arbor on the table saw -- mine is just under an inch so the 3/4" cut fitted rather snuggly when the lock-nut was fitted.
If you just want to remove bulk material, this could be an inexpensive solution.If you want clean cut, you might want to look elsewhere.Reasons:1. Examining the two outer blades:One of them is very slightly warped than the other.Align the arbor holes of both blades and examine them together, the teeth height are not on the same plane so you know they won't make clean cut when you stack them together.
Answer: yes