Check the listing for details. Japan waterstone dual whetstone sharpen duo #250/1000 KING K-80. Condition: New. Listed at 46.95 USD. AIRMAIL with tracking number + insurance included. The Japanese traditionally used sharpening stones lubricated with water (using oil on a waterstone reduces its effectiveness). They have been doing this for many hundreds of years, and the first stones were naturally occurring. These softer Japanese stones have a few advantages over harder stones. First, because they are softer they do not become glazed or loaded with the material they are sharpening. New particles are constantly exposed as you work with them and thus they continue to cut consistently. Second, they can be lubricated effectively with water (rather than oil, which can ruin the stone) so nothing but water is required. Finally, because they are soft, the worn material and the water form a slurry that in conjunction with the stone, sharpens and polishes the blade. KING K-80 This is a dual stone, this means it has 2 different stones, a #250 and a #1000 grip. It is made in Japan. The stone is 20,5cm long, 5cm wide and 2,5cm thick. (8" x 2" x 1") I have all items in stock and will usually sent the parcel the day of your payment or the next day. Shipping usually takes between 7 and 20 business days to most countries. Don't forget to order this ceramic knife guide for an easy sharpening : If you also want to get this Nagura cleaning stone, please add $8 to the total or contact me.(Also available separately in my shop)