7 Sheet Variety Pack PSA Pressure Sensitive Adhesive (.3, 1, 3, 9, 12, 30 and 40 microns) Lapping Microfinishing Film Aluminum Oxide (AO) 8-1/2 x 11 Inches

The performance at putting very polished and fine edges on knives is superb. I use these free hand on glass plates and I also use them on a TSPROF fixed angle and a Wicked edge fixed angle. IMHO the only ones of use are the 9 and below micron, the 30 and 40 to me have zero use. They are very good for putting a very fine edge and for getting a near mirror finish on the edge bevel that with just a slight bit of stropping will be a bright full mirror finish. The down side to them is on super steels like S90V, S110V, M390, S45vn etc etc you will wear them out like crazy. Trying to get that mirror finish. Now on steels like 420/440, 1050/1070/1095, AUS8/10 VG10, Cts BD1(N) and the likes you will get a couple knives off a 5.5x1 inch set. On the super steels I would say you would be lucky to get one knife off a set if you cut them 5.5x1 inch like for the wicked edge. Im mainly talking about the 3, 1 and 0.3 micron films with the wearing out really quick on the really high carbide high speed tool steels. If your just sharpening more of your normal alphabet soup steels (IE 3cr13mov, 8cr14mov etc) or AUS8/10s, 12c27s 440HC etc etc you will likely get two to three knives before the films need replacing. IMHO this are not a replacement of a proper stone progression and then strop progression for sharpening hobbies and knife collectors like my self.. But for your avg guy that just wants to put a very good edge on his knives and dont want to spend 1000s of dollars on high end stone progressions because he dont sharpen knives all that often then these films do a excellent job for that. I use them to keep wear off my really high end Shapton and Venev stones when Im sharpening knives that I dont care all that much about how perfect the edge is but yet want a hair whittling edge on.. These do not take the place of high end sharpening stones but they will allow you to get some mighty fine edges without spending a lot of money if you dont mind how slowly they cut and having to replace them a lot.

I happened to have a big piece of flat glass and was able to stick a half sheet of every grit to it and sharpened every chisel and plane blade I have to a scary sharp edge.

These are great. Very easy to use one you know the proper technique. They produce an absolutely stunningly sharp edge on the chisels, planer blades, and knives I sharpened

Nice price on this wide variety of lapping films. Puts a keen edge on razor and knives.

These are almost as good as stones. Will buy again.

Perfect for sharpening

Not quite as durable as I would like for sharpening chisels and plane irons. However they will put a seriously sharp edge.

There is no marking on the sheets as to which grit each sheet is.

These are pretty good lapping films. Puts a mirror polish on most metals.

Effortless keeping my chisels supersharp.