Jingling 16Mm 5/8" Tile Hole Saws Diamond Drill Bit Masonry Tools For Stone Pack Product Details 5Pcs 5/8" inch 16mm Diamond Coated Hole Saw Drill Bits for Stone Granite Marble Ceramic Product Name: Diamond tip masonry bit, Stone cutting bits, Granite hole bit, Drill bits for rocks Outer Diameter: 16mm(5/8 inch); Inner Diameter: 13.2mm; Drill Depth: 29mm Easy to use, excellent for making clean and accurate hole on stone, granite, marble, tile, rocks 8mm shank diameter that will fit cordless screwdrivers,drills etc or use in standard drill chuck Please add water for coolant and drill slowly; Holes require no ruther work as cutting is clean Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.