NANIWA Diamond Pro uses diamond abrasive bound in a layer of resin. The layer is 1 mm thick and is mounted to a metal base. The resin binder holds the abrasive material tightly,which makes it wear low and keep its flatness long lasting.It is best when
sharpening object in which flatness is of primary importance. You can splash and go. No mushy or clay-like.With diamond abrasive, the stone is able to work with extremely hard steel.A dressing stone is attached with diamond stone. It is used to keep the stone clean and sharpen optimally
