DESCRIPTION: Brand new and high quality Keep your tools at their precision best and rescue dull blades with this high-quality MATERIAL: White Corundum ( Its dense texture, high hardness) OCCASION: Alloy steel,Hardened steel forming mill, or for a variety of tools, measuring tools parts etc.. SPECIFICATIONS: PRODUCT GRIT: 320 #, 400 #, 600 #, 800 #, 1000 #, 1200 # STONE SIZE:150 * 12 * 3mm PACKAGE INCLUDED: 2 x 320 # Sharpening Stone 2 x 400 # Sharpening Stone 2 x 600 # Sharpening Stone 2 x 800 # Sharpening Stone 2 x 1000 # Sharpening Stone 2 x 1200 # Sharpening Stone 【How to use】. 1, the first oil stone into the water soaked for about 15 minutes. 2, in a direction, the strength of an even grinding, angle 10%-20% for the best. 3, sharpen the knife after the start of the slurry do not scrape off the slurry mud, there is a slurry of water can be sharpened knives more sharp Oh! 4, after the knife grinding, remember to wipe with a damp cloth or rinse with water, wipe ten. Use a soft brush to eliminate the surface of the oil stone, put in the ventilation to dry. 【Caution】. 1, when sharpening the knife fully use the entire surface of the oil stone, to maintain the consistency of the surface of the oil stone. 2, the use of attention to protect the oil stone, avoid falling from a high place. 3, with the use of sharpening oil for better results. 4, sharpeners and knives should not be placed in places easily accessible to children to avoid accidents. [12 pcs in 6Grits White Corundum Sharpening Stone] Different grit for most polishing and sharpening works. Grits: 320 #, 400 #, 600 #, 800 #, 1000 #, 1200 # . [Material White corundum oil stone Description ] The stone is sintered by high temperature and appears to be red, with a tight and delicate structure and high hardness and strength. When grinding the workpiece, it can keep the sharp edge good finish, high durability, similar hardness to white corundum, good toughness, and usually has better grinding performance than white corundum. [Use]It is suitable for grinding tool steel, alloy steel and quenched steel, especially for grinding various tools, gauges and instrument parts with high requirements of finish or tool sharpening and repairing workpieces.It can be applied to printing stone,Knives,and other metal surface polishing and sharpening. [Notes of Use the Sharpening Stone] 1.When sharpening the knife fully use the entire surface of the oil stone, to maintain the consistency of the surface of the oil stone. 2.The use of attention to protect the oil stone, avoid falling from a high place. 3.With the use of sharpening oil for better results. [Portable Size sharpening stone] Product Size: 150 * 12 * 3mm(5.9x0.47x0.12Inch),package included 12 pcs whetstone set ,Small and portable, The type allows you to polish small parts and small corners easily.