Whetstone Amakusa Whetstone Special Prepared Water Medium White Natural Whetstone 20 Type ・20 type Approximately 20.5 x 7 x 5 cm, Approximately 1719g #Compare with Amakusa Whetstones from Amakusa Treasure Island. This is an Amakusa whetstone that is a hybrid between red (Torato) and upper white. The mining of upper white Amakusa whetstones is becoming difficult. That's where the hybrid whetstone... Medium White comes in. OK for stainless steel knives! The price is also cheaper and more affordable than upper white whetstones. It falls into the category of medium grit whetstones. I think it is suitable for sharpening knives, carpentry tools, and agricultural tools. You can use any surface for sharpening. As it is a natural product, there are hard parts, soft parts, and parts with air bubbles. The air bubbles are favored because the sharpening slurry accumulates there. There may be slight chipping or, rarely, cracking. We cannot provide support for that. Please purchase only if you understand that it is a natural product. [Reference Explanation] Amakusa whetstones are produced from the island of Oyano-machi, Kamiamakusa City, Kumamoto Prefecture, a place associated with Amakusa Shiro's war funds. They have long been favored for sharpening knives, carpentry tools, and agricultural tools. Recently, due to the spread of artificial whetstones and the aging of producers, they have become less available in the market. This time, we will deliver them directly from the local Amakusa to those who can use them. ※The grit size varies for each natural whetstone. ◎Torato (Red) Reference grit size: Around 500-800 ◎Medium White (Special Prepared Water) Hybrid of red and white, Nakajiro ◎Upper White (Johaku, White) Reference grit size: Around 1000 (Production discontinued) [Reference Sizes] ・10 type Approximately 21.5 x 9 x 7 cm, Approximately 3200g ・15 type Approximately 21.5 x 7 x 6 cm, Approximately 2200g ・20 type Approximately 20.5 x 7 x 5 cm, Approximately 1700g (Custom order) ・30 type Approximately 19.5 x 6 x 4 cm, Approximately 1130g ・60 type Approximately 16.5 x 4.5 x 3 cm, Approximately 600g (White only) ・80 type Approximately 15 x 4 x 3 cm, Approximately 420g (Unselected) #Whetstone #AmakusaWhetstone #WhetstoneForSharpeningKnives #WhetstoneForSickleSharpening #AmakusaShiro #WoodGrainStone #Torato #PreparedWaterWhetstone #Oyano ※We plan to send it via Yu-Packet Plus. ※Multiple items can be discounted slightly. ※Please comment if you want to remain anonymous. ※This is an inexpensive whetstone that can be used normally, so please refrain from asking advanced questions.