Snappy Tools 7/64 in. Countersink and Bit makes drilling pilot holes and countersinking or counterboring for screws simple and efficient in one easy step. The 82° countersink angle is designed to match the head angle of most screws, ensuring a fit every time. Precision machined in the USA with tight tolerances, this tool is crafted from thru-hardened alloy steel to provide a long cutting life. It features a 1/4" hex power bit shank compatible with impacts and quick-change chucks for versatile use. The drill bit can be easily adjusted or replaced by loosening the hardened set screw, which s a secure hold on the pilot drill. For added precision, the Snappy Premium Rotating Depth Stop (Part # 43032) is available separately to control depth accurately. Model Number: