Kai Corporation Seki Magoroku Combination Sharpening Stones for Knives #1000 and #4000, with Storage Case, Made in Japan, AP0334

Size: 240 x 95 x 50 mm Material: Combination whetstone: White alumina (#1000 & 4000), Storage case = sharpening base and lid: ABS resin (heat resistant up to 80°C), Anti-slip: Thermoplastic elastomer (heat resistant up to 80°C) Weight: 951 g Country of origin: Japan Accessories: Storage case included