4000 Grit Honing Stone, for use after 1000 grit sharpening.
This stone hones quickly and evenly. Which is exactly what we're looking for from a high-quality stone. Contrary to what you might expect from the name, the glass doesn't do the honing. You hone on a high-quality Japanese whetstone. A layer of tempered glass is attached to this to prevent warping..
Shapton 4000 Grit Glass Stone
Stop using immediately if the glass is either broken or cracked on impact. Take care that the sharpening slurry is not left on the stone after using otherwise it maybond with the stone on drying. Take care that glass stones are not kept in water.Otherwise it will greatly shorten the durability of the stone. Avoid storing in the places which reach high or low temperatures. Extreme temperatures will cause cracking. Take care that glass stones are not placed in a location subject to direct sunlight. The stones may get weathered and cause cracking. Take care that glass stones are not dried rapidly with fan, drier, etc. This will cause breaking or cracking.Take care that hot water is not put on glass stones. This will cause breaking or cracking.Take care that detergent is not used for glass stones. This will cause loss of sharpening capability.