Naniwa P-306 Professional Stone (Chosera) 600 Grit Japanese Whetstone Knife Sharpener While copper is heftier than

While copper is heftier than stainless steel or glass-filled nylon

Ergonomic Plastic Housing

the Polestar sets a new standard in affordable high performance

Genuine molded leather sheath

the Roc’s blunt-tipped

Naniwa P-306 Professional Stone (Chosera) 600 Grit Japanese Whetstone Knife Sharpener While copper is heftier thanNaniwa's Professional Stone is their highest grade stone and the overseas model of their "Chosera" stone. 600 Grit 210 x 70 x 20 mm Instructions: Splash stone with water before sharpening and continue to do so when sharpening. Naniwa Professional Stones do not need soaking as they have tightly resin bonded particles, making them more durable and effective than other makes. Made in Japan