4-Piece Countersink Drill Bit Set:Includes 4 commonly used drill bit sizes: 7/64", 1/8", 9/64", 5/32"(2.8/3.2/3.5/4.0mm), ideal for 5/16"(8mm) and 3/8" (10mm)82° countersink holes
Fully Adjustable Depth Control: Use the included hex key to set exact drilling depth; plastic depth-stop rings prevent over-drilling and protect work surfaces for flawless results
Universal Quick-Change Design: Standard 1/4" hex shank fits all cordless drills, impact drivers, and quick-change chucks – no collet needed
Wide Material Compatibility: Perfect for natural wood, plywood, MDF, chipboard, pine decking, drywall, and plastics – ideal for furniture, cabinetry, and construction projects