this flattening stone is very very good i am surprised i just flattened my japanese shapton 1500 grid stone works amazingly 10 stars thank you dear seller
comes not very flat, have to bend it to get pretty flat. cuts very fast even high quality/hard stones like nani pro 400(chosera). lives scratches on the stone, especially the 120# side. overall a good deal compared to Japanese and US brand that cost x5 times the price at least