The Naniwa Japanese Waterstones is are excellent single grit waterstones. These stones are available in the 120 (extra coarse), 1000 (fine) and the 3000 (very fine).
Like traditional waterstones, we recommend soaking these in water prior to use.
Each stone measures 175 MM long x 55 MM wide and 25 MM thick. In inches the stone measures 6 7/8" long, 2 1/8 wide and 1" thick. This size offers a good balance of value and size. The stones are bonded together. The base provides plenty of knuckle clearance when sharpening knives and is solidly built for sharpening tools.
Being a traditional waterstone, these stone sharpen very quickly.
120/1000 - This stone has an extra coarse 120 side (gray) and a fine 1000 grit side (red). If you favor speed, this combination of grits is very nice.
1000/3000 - This stone has a fine 1000 grit (red) and an extra fine 3000 grit side (tan). If you are patient, this can sharpen even a very dull knife. However, where this stone really shines is in maintaining your knives and tools. The 1000 grit side quickly refines a moderately dull end and the 3000 grit side will hone this edge to a very nice edge.
Q. Do I need to soak all of the stones in water before use?
A. Yes, all of the stones will benefit from soaking in water prior to use. The 120 and 1000 will need more water while the 3000 doesn't require much soaking before hand. We do not recommend that you store them long term in water, only soak them before use.