6Pcs Countersink Drill Bit Set #6, 8, 10, 12, 14, Tapered Counterbore Drill Bits Product Details Specification: Corresponding Drill Size: Package: Unit Conversion: 1mm= 0.039in *6pcs countersink drill bit set for the drilling equipment with a chuck or connector for drilling in hard wood. *Includes a 6-piece set of taper drill #6 (2.38mm), #8 (2.78mm), #10 (3.17mm), #12 (3.56mm), #14 (3.97mm) and a allen wrench. *Made of high-speed steel 4241 (titanize) + # 45 steel for durability. *Carrying a hex wrench, the tapered bit's pointed tip and wide cutting edge quickly drills clean pilot holes to ensure a tight fit for screws. Smoothly countersinks holes in both soft and hard woods and drills tapered holes for screwing. *Suitable for drilling machines with chucks or couplings for drilling holes in hard wood and wood ply. NOTE- On the same axis, the screw cap lies below the plane of the board after screwing! 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.