Atoma Slurry Plate 140. These are small plates attached to a nice oak base that can be used to condition your stones and produce a nice slurry on them before sharpening. Most Japanese water stones need a good slurry to cut effectively and this little plate will allow you to get a good mud working quickly and easily without a lot of effort. They also do not mix with the stone like many naguras so your stones will cut at the grit intended. We also use them for rounding the edges off our stones. Measures about 3" x 2".