Sharpening Supplies

Hakuto 2

Medium hardness, they are ideal for creating softer bevel changes and finishing full convex grinds. Given the available grits are only medium to high grit, Hakuto 2 stones are best left for use after initial, coarser work has been completed.

Recommended for advanced users.

Hakuto 2 grits: 3000, 3000S, 6000, 6000S, 10,000

Brand: NSK
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #3000

Hakuto 2

Medium hardness (harder than Hakuto 3, softer than Hakuto 1), it is ideal for blending in smooth transitions on bevels or grinding in full convex grinds (as opposed to crisp lines like a Shinogi). Ideal for advanced users.

Hakuto 2 grits: 3000, 3000S, 6000, 6000S, 10,000

Brand: NSK Kogyo Ltd.
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #6000 S (Soft)

Hakuto 3

The softest in the Hakuto series, they are the most similar of the Hokuto stones to feeling like soft, muddy natural stones. Like Hakuto 2, they are ideal for creating softer bevel changes and finishing full convex grinds.  Given the available grits are only medium to high grit, Hakuto 2 stones are best left for use after initial, coarser work has been completed.

Recommended for advanced users, or for users who prefer the feel of of natural stones that are not as hard as Oboro Knife.

Hakuto 3 grits: 3000, 6000, 10,000

Brand: NSK
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #12000

Kyokuha

The original NSK Kogyo diamond stone series, Kyokuha are built for ease of use and are effective on a wide variety of steels from carbon, stainless, powder, even tool steel. It has a large selection of grits to fit almost every user's needs. These are the softest of the NSK series and are ideal for beginners and seasoned users.

Kyokuha grits are: 200, 300, 400, ~500 to ~600, 800, 1000, 1500, 2000, 3000, 4000, 8000, 10,000, and 16,000

Brand: NSK Kogyo Ltd.
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #200

Kyokuha

The original NSK Kogyo diamond stone series, Kyokuha are built for ease of use and are effective on a wide variety of steels from carbon, stainless, powder, even tool steel. It has a large selection of grits to fit almost every user's needs. These are the softest of the NSK series and are ideal for beginners and seasoned users.

Kyokuha grits are: 200, 300, 400, ~500 to ~600, 800, 1000, 1500, 2000, 3000, 4000, 8000, 10,000, and 16,000

Brand: NSK Kogyo Ltd.
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #3000

Kyokuha

The original NSK Kogyo diamond stone series, Kyokuha are built for ease of use and compatibility with a wide variety of steels from carbon, stainless, powder, even tool steel. It has a large selection of grits to fit almost every user's needs. These are the softest of the NSK series and probably easiest to learn sharpening and polishing. I

Recommended for beginners and seasoned users, or those who simply prefer softer stones.

Kyokuha grits: 200, 300, 400, ~500 to ~600, 800, 1000, 1500, 2000, 3000, 4000, 8000, 10,000, and 16,000

Brand: NSK
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #400

Kyokuha

The original NSK Kogyo diamond stone series, Kyokuha are built for ease of use and compatibility with a wide variety of steels from carbon, stainless, powder, even tool steel. It has a large selection of grits to fit almost every user's needs. These are the softest of the NSK series and probably easiest to learn sharpening and polishing. I

Recommended for beginners and seasoned users, or those who simply prefer softer stones.

Kyokuha grits: 200, 300, 400, ~500 to ~600, 800, 1000, 1500, 2000, 3000, 4000, 8000, 10,000, and 16,000

Brand: NSK
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #800

Kyokuha

The original NSK Kogyo diamond stone series, Kyokuha are built for ease of use and compatibility with a wide variety of steels from carbon, stainless, powder, even tool steel. It has a large selection of grits to fit almost every user's needs. These are the softest of the NSK series and probably easiest to learn sharpening and polishing. I

Recommended for beginners and seasoned users, or those who simply prefer softer stones.

Kyokuha grits: 200, 300, 400, ~500 to ~600, 800, 1000, 1500, 2000, 3000, 4000, 8000, 10,000, and 16,000

Brand: NSK
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #1000

Oboro Knife

The newest NSK series, Oboro Knife was designed specifically for kitchen knives, and are very effective on a wide variety of steels for a wide variety of services. The abrasives in Oboro Knife tend to cut deeper and faster than other NSK lines, thus they are the most ideal series for full-blade servicing such as thinning, repairing, and reprofiling. Ideal for seasoned to advanced users.

Oboro Knife grits are: 200, 400, 800, 2000, 4000, 6000

Brand: NSK Kogyo Ltd.
Grit Range: #200
Thickness: 3.5mm
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g

Oboro Knife

The newest NSK series, Oboro Knife was designed specifically for kitchen knives, and are very effective on a wide variety of steels for a wide variety of services. The abrasives in Oboro Knife tend to cut deeper and faster than other NSK lines, thus they are the most ideal series for full-blade servicing such as thinning, repairing, and reprofiling. Ideal for seasoned to advanced users.

Oboro Knife grits: 200, 400, 800, 2000, 4000, 6000

Brand: NSK Kogyo Ltd.
Thickness: 3.5mm
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #2000

Oboro Knife

The newest NSK series, Oboro Knife was designed specifically for kitchen knives, and are very effective on a wide variety of steels for a wide variety of services. The abrasives in Oboro Knife tend to cut deeper and faster than other NSK lines, thus they are the most ideal series for full-blade servicing such as thinning, repairing, and reprofiling. Ideal for seasoned to advanced users.

Oboro Knife grits are: 200, 400, 800, 2000, 4000, 6000

Brand: NSK Kogyo Ltd.
Grit Range: #400
Thickness: 3.5mm
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g

Oboro Knife

The newest NSK series, Oboro Knife was designed specifically for kitchen knives, and are very effective on a wide variety of steels for a wide variety of services. The abrasives in Oboro Knife tend to cut deeper and faster than other NSK lines, thus they are the most ideal series for full-blade servicing such as thinning, repairing, and reprofiling. Ideal for seasoned to advanced users.

Oboro Knife grits are: 200, 400, 800, 2000, 4000, 6000

Brand: NSK Kogyo Ltd.
Grit Range: #4000
Thickness: 3.5mm
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g

Oboro Knife

The newest NSK series, Oboro Knife was designed specifically for kitchen knives, and are very effective on a wide variety of steels for a wide variety of services. The abrasives in Oboro Knife tend to cut deeper and faster than other NSK lines, thus they are the most ideal series for full-blade servicing such as thinning, repairing, and reprofiling. Ideal for seasoned to advanced users.

Oboro Knife grits: 200, 400, 800, 2000, 4000, 6000

Brand: NSK Kogyo Ltd.
Thickness: 3.5mm
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #6000

Oboro Knife

The newest NSK series, Oboro Knife was designed specifically for kitchen knives, and are very effective on a wide variety of steels for a wide variety of services. The abrasives in Oboro Knife tend to cut deeper and faster than other NSK lines, thus they are the most ideal series for full-blade servicing such as thinning, repairing, and reprofiling. Ideal for seasoned to advanced users.

Oboro Knife grits are: 200, 400, 800, 2000, 4000, 6000

Brand: NSK Kogyo Ltd.
Thickness: 3.5mm
Length: 200mm
Width: 75mm
Height: 26.5mm
Weight: 740g
Grit Range: #800

Brand: Tanaka Toishi 田中砥石工業所
Producing Area: Kyoto, Osaka - Japan
Mine: Yaginoshima
Appearance: Classic grey/blue Mizu with lots of teeny tiny Goma
Size: 209mm x 76mm x 40mm (type 40)
Weight: 1567g
Grit Range: 4000-6000

1-5 Scale: 1 = Less, 5 = More
Hardness Level: 4.5
Scratch Depth: 2
Speed: 3.5
Wear Rate: 1.5
Self Slurry: 1.5
Thirst: 2
Ease of Use: 3

Notes: A lovely stone and affordable stone. While it is on the harder side on paper, it was actually difficult (ie we had to intentionally try) to get the stone to scratch our test Kiridashi. The feedback was tackier than expected given its hardness, providing more feedback and reducing the chances of slipping that can occur with harder stones. Again despite its hardness, it is rather fast and creates black slurry after 10-20 seconds. It provides a brighter Kasumi with relative ease, we're rather impressed. For the price it is a good choice for both beginners and intermediate users despite its hardness. Its dimensions and hardness will make it last many years.

Recommended Usage: Keen edges, polishing for frosty to bright Kasumi on wide bevels. Very good for push-cut tools.

Please Note: Given the natural aspect of these stones, all subjective qualities are our estimates and may vary slightly from your exact expectations and assessment. The images shown and characteristics described may be from a previous example. If purchased, yours may differ slightly in appearance and qualities. Dimensions, weight, and stamps may be different from listed if it has been tested.