A large milled stone for mower scissors and harvesting. Grain: #180 (Green - for stainless steel sheet, hard grinding) Comes with a handy plastic storage case. "Experience, reliability, innovation. We never sit down. We are constantly developing new bold products and updating your old favourites". Naniwa abrasive MFG is a Japanese manufacturer of sharpening stones for industrial and domestic use, diamond tools for stone and other materials, sandblasting systems for stone engraving and a full range of abrasion related products with over 60 years experience, dedication, and innovation. You can almost feel that the blade becomes sharper as you work. When we say, "cutting-edge technology", we mean literally! With constant efforts to bring quality and service to increasingly high levels, when it comes to something related to abrasion, we can offer the best advanced and easy-to-use tips and products for the professional or home user. Our high levels of quality and service of products are greatly appreciated by customers in Japan and around the world.