Snappy Tools 5/64 Inch x 3/8 Inch Countersink #43005 Drill the pilot hole and countersink or counterbore for screws in one easy step! The 82 countersink matches the angle on the head of most screws. Precision machined in the USA with tight tolerances. Made of thru-hardened alloy steel providing long cutting life. 1/4" hex power bit shank to fit in impacts and quick change chucks. Easily adjust or replace drill bit by loosening the hardened set screw that ensures a secure hold on the pilot drill. Utilize the Snappy Premium Roatating Depth Stop for precise depth control (Part # 43032) (Sold Seperately) Features Combination countersink and/or counter bore for standard wood plugs. Standard hex shank - fits all power bit quick change chucks Alloy steel thru hardened with a 82 degree angle Drill bits are adjustable for different length screws USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.