Antimicrobial Stone "Clean SERA"(Finishing #4000) is officially admitted to JIS standard of the SIAA authorization for the first time in the whetstone industry. It is proved to prevent bacteria such as Escherichia coli and Staphylococcus aureus to grow. Comes with Sturdy Plastic Stone Holder. There are 3 variation of Grit, #220, #1000 & #4000. Brand NANIWA Lobster Mark Item Antimicrobial Stone "Clean SERA" P No. IS-0211 Grit #4000(FINISHING) Size(of Stone) 8.3"(210 mm) x2.8"(70 mm) x H. 0.8"(20 mm) ===IMPORTANT notes before purchase!!!=== 1.Import duties, taxes(VAT, GST, etc.) and Handling Charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. 2. Please check with your country's customs office to determine what these additional costs will be prior to purchasing. We cannot accept any return or cancellation, due to such duties unpaid in your country.