Check the listing for details. Mercer Culinary Premium Sharpening Stone 240/800 Grit. Color: 240/800, Condition: New. Listed at 43.59 USD. Mercer Culinary Premium Sharpening Stone 240/800 Grit Mercer Stone Premium Sharpening 240/800 Grit, Standard Features Specially Formulated Premium-Grade Corundum Manufactured With An Advanced Technology For Smoother Surfaces And Superior Results.240 Grit Side Will Correct Slight Edge Flaws. 800 Grit Side Is Excellent For Finishing And MaintenanceLarger Size Allows For Longer Sharpening Stroke And More Complete Blade Edge Coverage.Silicone Base For Secure Sharpening, Prevents Damage To Work Surface, And Safer Storage. Fast and Free Shipping You're already purchasing the item. Why pay additional for shipping, especially slow shipping? We get your order shipped out within 1-business day and delivered to your doorstep as quickly as possible. Prop65 Warning This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. 30-day Money Back Guarantee We are committed to making sure that you leave this transaction satisfied. If you're unhappy with the product for any reason, you may return it back for your money-back or a replacement within 30 days. No questions asked!