IWIVI Whetstone, Double-Side Knife Sharpening Stone Set Grit 600//1500 Knife Sharpener Combination Waterstone Kits with Non-slip Silicone Base, Angle Guide and Cleaning Towel (600#/1500#) DOUBLE SIDE COMBINATION STONE and PREMIUM QUALITY MATERIAL: the knife sharpener is perfect for kitchen, outdoor and DIY projects; The low grit side 600 # is for tough sharpening and the other high grit side 1500 # is for fine grinding. We choose very professional and high quality white corundum material to guarantee the product is heat-resistant, wear resistant and durable EASY TO USE with MANUAL and UNIVERSAL USE: Knife sharpening guide is included which teach you how to use the waterstone in detail steps. Suitable for most knives, such as scissor, pocket knives, hacking knives, fruit knives and other kitchen knives. But serrated knives serrated blade knives cannot use this kind oil stone STONE ANGLE GUIDE MAKE DULL KNIFES SCARY SHARP: If you don't know how to sharpen a knife at right angle, stone angle will be a good choice. A cloth or towel is included as a gift which you can use it clean your knives NONSLIP BOTTOM BASE: Slip-resistant rubber bottom make your sharpening stone easy to handle and stays in place during use. 4 SIZE CORUNDUM WHETSTONES: 600/1500 Grit, 1000/4000 Grit, 2000/5000 Grit, 3000/8000 Grit; DIMENSIONS: 7" x 2" x 1-1/2" Different size has different color; The honing stone don't need oil and water is enough. Vey convenient for you to handle all things QUALITY-CHECK AND GOOD AFTER-SALE SERVICE. Our products has been inspected one by one before shipped.If it has problem or damaged during shipping, please contact our after-sale service team , we will solve the issue for you soon