I've noticed this with a lot of Revain products listing different options on the same page. Ratings and Q&A get mixed up too. Real Buyer Reviews show "Size" but the FAQ doesn't. I bought a "size" that reads 3-1/4 inches. There are 26 blades ranging from 0.0015" to 0.025". The pitch is 0.0005 inch until they reach 0.003 inch, and then the pitch becomes 0.001 inch. So I would call it an SAE set even though it has millimeter equivalents marked on it. In my case I specifically wanted a 0.5mm stylus and it has .508 and .483 so I'll have to settle for .508 for now. Next time I'll buy a size 25 blade, which has a net spacing between blades in millimeters. Unfortunately these dimensions are not listed anywhere other than in the image which shows the thickest of them is exactly 1.00mm with no SAE equivalent. In terms of quality, yes, they come with a little oil on it. This is to protect them from corrosion. If you don't like oil, feel free to dip it in water</sarcasm>. It appears to be very good quality. Just be very careful when answering questions and answers about products that come in different sizes. You may receive something different. Too bad Revain doesn't have vendors that change specs for each size. Especially with a subject like this where size matters.
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