All Naniwa Professional stones are splash and go. A binding agent unique to Naniwa bonds the material and makes for a more consistent grit size and therefore a more consistent sharpen. Naniwa Profesional perform best with low alloy steels (ie. shirogami and aogami)
Naniwa Professional 400 - This stone is excellent at removing material quickly ie resetting bevel angels or removing chips
Naniwa Professional 800 - The 800 stone is perfect for quick results when putting a fresh edge on a knife. One of the best on the market.
Naniwa Professional 3000 - A very high quality finishing stone with the ability to get the knife razor sharp.