Quick-Change 5-Piece Countersink Drill Bit Set By Snappy Tools, Proudly Made In Product Details Quick Change 5 Piece Countersink Drill Bit Set by Snappy. Combination countersink and/or counter bore for standard wood plugs with standard hex shank will fit all power bit quick change chucks. Made of alloy steel thru hardened with a 82 degree countersink angle. The drill bits are adjustable for different length screws with a 3/8" or 1/2" diameter counter bore. Your drill will not slip when using large 1/4" socket head screws. Made in USA by Snappy. In one step, you can drill, countersink and counter bore the perfect sized hole for #4, #6, #8, #10, or #12 screws. Snappy Tools Countersinks will drill the pilot hole and countersink or counter-bore for screws in one step. Countersink to drive the head of the screw flush with or slightly below the surface Ideal for plugs or dowel buttons. The 1/4" hex shank can be used with power drills and quick-change chucks. Experience the higher quality of Snappy Tools. Combining higher quality materials and patented technology, Snappy delivers industrial quality tools to the tradesman and do-it-yourself markets at an affordable price. Made in USA by Snappy; Includes 5 Gold Screw Countersinks: 5/64x3/8, 3/32x3/8, 7/64x3/8, 1/8x3/8 9/64x1/2 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.