Century Drill Tool 05320 Copilot Hole Saw Enlarger Guide Product Details Product Description Century's exclusive, patented CoPilot allows for anyone to easily enlarge existing holes in one, easy cut. For use on every style and brand of threaded hole saw arbor. Use adapter nut to convert thread count from 1/2-20 to 5/8-18 when required. From the Manufacturer Century's CoPilot holesaw adapter enlarges existing holes in all types of materials. Century's exclusive, patented CoPilot allows for anyone to easily enlarge existing holes in one easy cut For use on every style and brand of threaded hole saw arbor Use adapter nut to convert thread count from 1/2-20 to 5/8-18 when required 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.