O?Skool 9/32 Inch X 1/2 Inch Counterbore Drill For 1/4" Screws, Flat, Step Drill Product Details The flat countersink drill bit with a drive shank of 25/64 inch (10mm) and a drill size of 9/32 inch (7mm) offers professional finishing for woodworking projects. The recessed hole neatly seats the screw head, enhancing the appearance, while the counterbore center hole provides a slightly larger space for fine adjustments before locking two workpieces together. This versatile drill bit is compatible with various 1/4" screws, including furniture screws and socket-head screws, making it suitable for a wide range of projects. The counterbore drill bit simplifies the drilling process by combining the recessed hole and through the hole, saving time and ensuring concentricity. Additionally, using this flat countersink drill bit reduces the risk of wood splitting when fastening materials. Drive Shank: 25/64 Inch (10mm), Drill Size: 9/32 Inch (7mm), Counterbore Size: 1/2 Inch, Drill Length: 4 Inch, Counterbore Length: 15/16 Inch Professional Finishing: A flat countersunk drill bit creates a clean, professional finish for woodworking projects. The recessed hole seats the screw head neatly, enhancing the appearance. Moreover, the counterbore center hole provides a slightly larger space than a 1/4" screw, allowing you to make fine adjustments before locking two workpieces together. Compatible with Styles of 1/4" Screws: Flat countersink drill bits are versatile and work well with various screws, including furniture screws, round screws, and even some socket-head screws. This versatility makes them suitable for a wide range of projects. Simplified Drilling Process: A counterbore drill bit combines two steps into one ? drilling the recessed hole and the through hole ? which saves time and effort during the drilling process. This drill bit ensures the inner and outer holes are perfectly concentric. Reduced Splitting: When fastening materials like wood, using a flat countersink drill bit helps prevent the wood from splitting. 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.