Yoyal Folding 360/600 Grit Diamond Knife Sharpener / Double-sided Sharpening Stone Diamond-electroplated ensure efficient and sharp sharpening result. Double sided diamond design for best choice (360Grit as coarse sharpening, 600Grit for fine honing) Folding cover design to protect surface of diamond sharpener, also easy to carry. Material: Diamond whetstone(360#&600#)Stainless Steel, ABS Application Scope: Kitchen knives(Metal knives, Ceramics knives, ScissorsOutside tools, Garden tools, For Agricultural Tools)