I bought the matching salt and pepper mills also.The pepper mill is OK, though I’m not sure it’s the same quality as one I gave as a gift a few years ago, it doesn’t seem to fit quite as smoothly but claims it’s still made in Greece.The salt mill was disappointing. On the box it says: “…we have fitted several mill designs with nylon sleeves. This makes them suitable to grind course (their spelling, not mine) sea salt into fine ground salt without the corrosion that results when salt comes in contact with metal.”But inside the box is a paper insert for receiving optimum performance: “(1) Use only sun cured sea salt. Mined salt contains moisture which will cause a build up in the grinding mechanism. Pepper Mill Imports offers California Sea Salt under the Melina label…” among other warnings about overfilling, servicing the grinder, and keeping the surface clean to avoid corrosion.So…which is it? I can’t use the coarse sea salt I already have?The grinding gears do seem to be nylon…they’ll last awhile — then what? I don’t know if it has a liner inside, I’m not opening the sealed bag since it’s not staying.I use very little salt and bought the companion mill more to make a set rather than need, and certainly don’t want to buy special salt for it, so it’s going back. Interestingly, it seems to have been returned before, someone has jotted some notes on the insert.FWIW: I was upset not to find handles until they were located INSIDE the grinder! Didn’t expect that, didn’t think there was room. Also the bottom of the pepper mill has a large screw which is probably the coarse/fine adjustment; there doesn’t seem to be a comparable screw on the salt mill. I’d prefer a coarse/fine adjustment which is not in the path of the pepper output for sanitary reasons (my current mill has a screw at the top which can be tightened/loosened to move the shaft against the grinder keeping any contamination from fingers away from the food) but it’s not an overwhelming consideration.UPDATE: I did keep these and have become an ENORMOUS fan of the pepper mill (never quite got into the habit of using the salt mill) — this review deserves an update and adding some stars! The coarseness of the pepper is somewhat controlable by how much the knurled nut on the top is tightened, so if it’s down pretty tight, the grind is very fine. I liked it so much I bought a set for my sister. She had a different, but interesting, problem: the pepper wouldn’t grind. When I checked it out, the cause was peppercorns which were too large and wouldn’t fall down into the grinding mechanism. I swapped out smaller peppercorns — problem solved!You really appreciate the difference in peppercorns using the grinder — try some of the ‘gourmet’ peppercorns which are multi-colored instead of generic black ones, there truly is a difference — using different peppercorns just added subtle dimensions of flavor. The mill has held up very well and I expect it will continue to grind away for years to come. I would never, ever, go back to pre-ground pepper; who knew there was such a difference with fresh ground pepper?!I’ve been using a cheapo single-use salt mill (the ones with plastic innards which break about the time it runs out of salt)…however I do intend to start using the Atlas salt mill; it’s also a more environmentally friendly option.Thanks to the vendor?/manufacturer? who responded to the ‘special salt’ issue. I suspect, if it’s like the pepper, you might have to choose the right product or right size of coarse salt to use it successfully, and look forward to using it.