Product Description:Authentic Japanese Combination Whetstone which has the finest medium grey #1000 Grit on one side and a lower grade of 240 Grit on the other. It can be used for most type of knife such as cleaver, fruit, and sushi knife. This type of whetstone is recommended by many professional chefs to achieve ultimate sharpness of the knife. Use this whetstone also to sharpen your weaponry collections of Samurai Swords, Kama, etc. Specification:240 / 1000 Grits with Rust Remover Overall Length: 7" x 2" x 1 1/2" Weight: 1 lb 10 oz Maintenance: Hand Wash w/Water Made in Japan Suggested Retail Price $40.00