【Professional 2-In-1 Sharpening Stone】: the1000 grit side quickly sharpens dull and damaged knives; the 6000 grit side is ideal for finishing and polishing edges 【Safe and Easy to Use】: Different from others, DDF IohEF Angle Guide's inside is made of new silicone, to prevent it from scratching your knife. And it nicely allows you to better find the angle of the sharpening. Non-slip silicone base is easy to sharpen 【Widely Applicable】: Our knife sharpening stone is suitable for kitchen knives / hunting knives / fruit knives / outdoor knife / blade / scissors / garden tools etc. (Except serrated knives and ceramic knives) 【High Quality White Corundum Material】: the whetstone is made of professional corundum, resistant to corrosion, heat 【24 Month Warranty】: We offer you a 24 month warranty. If there are any problems with the whetstone, please contact us at any time, we will offer the best customer service.