Adjustable Countersink Drill Bit Set with Replaceable HSS Drill

【Contents】: This set includes 1 piece of #8 (4.5mm) countersink drill bits, 1 piece of 1/8" (3.2mm) replacement drill, and 1 piece of 2.5mm hex key for easy bit changes.

【High Durability】: Made of Carbide Tipped material with a hardness rating of HRC 50-54, this countersink drill bit set offers superior cutting power, excellent durability, and resistance to abrasion.

【Simple Adjustment】: The tool is equipped with a depth adjustable nylon stop collar that can be easily adjusted for different lengths of screws. It can create counterbored holes in wood while ensuring consistent countersink depth, protecting the work surface, and preventing clogging with debris cavities.

【Self-Clearing】: The drill bits fit precisely into the countersink sleeves, and the three chamfered flutes allow for faster operation and self-clearing drilling of swarf, resulting in perfectly sized and shaped holes.

【Time-Saving】: With a 2-in-1 design, this tool simplifies the process of countersinking, turning it into a one-step operation. It can create flawless countersink holes for flush-set and plugged screws without causing wood splitting. The 1/4" hex shank is compatible with power drills and quick-change chucks, making projects more efficient and precise.

product information: