SUEHIRO GOKUMYO GMN150 #15000 SUPER FINISH CERAMIC STONE

Not 4 stars on the customer service, that would be a solid 5, because they have excellent support and fast shipping.. I rate the stone only a 4, because i dont like the way water beads up on the stone. I solved that by adding a surfactant to my water Best, Mike

Great ultra fine stone, however since I also have the 20K version I probably could have skipped this one.