Description:  400&600 Grit Two Sided Sharpen Stone Diamond Outdoor Sharpening Whetstone Sharpener.     Product Feature:  1. Diamond-electroplated ensure efficient and sharp sharpening result.  2. Double sided diamond design for best choice (400 Grit as coarse sharpen, 600 Grit for fine honing).  3. Folding cover design to protect surface of diamond sharpener, also easy to carry.     Using Instruction:  1. First open sharpener cover, Complete one or both of the following steps depending on how blunt the blades is.  Step 1: 400 grit for coarse sharpening: suitable for a blunter blade.  Start the coarse 400 grit of the stone, move the blade back and forth over the stone at an angle of 10 - 30 ° by using light pressure.  Generally sharpen the tools with coarse stage every six months or as required.  Step 2: 600 grit for fine honing; it is a necessary step for the elimination of burr on the blade, and makes the blade smooth and bright It is recommended to do it approximately once a week.  2. Clean the blade with the water or wiper and dry it after use and clean the sharpener with banister brush.    Spec.:  Diamond coated 400&600grit;  Plastic Material:ABS;  Length:4inch;  Applicable scope:Widely used for outdoor blade, garden tools etc.  Quantity:1pc;     Package Included:  1 x Sharpener    Caution:  1. Please hold sharpener tightly when sharpening. 2. Please put sharpener well to prevent diamond surface from contaminating after use.