12-piece countersink drill bit set with adjustable depth design Includes sizes #4, #6, #8, #10, and #12 for common woodworking screws Two-flute cutting design helps reduce chatter and improve finish quality 82° countersink angle for clean pilot holes and flush screw seating Titanium-coated high-speed steel construction for durability 1/4"" hex shank compatible with standard drills and drivers Includes replaceable drill bits, magnetic extension holder, and wrench Storage case with organized compartments for easy access and transport Product Description: This 12-piece countersink drill bit set is designed for woodworking tasks that require clean pilot holes and properly seated screws. The adjustable countersink design allows you to control drilling depth for consistent results across a variety of materials. Featuring a two-flute cutting design, the bits help reduce vibration and produce smoother finishes. The 82-degree countersink angle allows for proper screw seating, helping achieve a flush or recessed finish. Constructed from titanium-coated high-speed steel, the bits are suitable for use with both softwood and hardwood. The set includes replaceable drill bits, a magnetic extension bit holder for added reach, and an Allen wrench for adjustments. All components are organized in a storage case for easy transport and organization. Compatible with standard hand drills, impact drivers, and drill presses. Item Specifics: Brand: Unbranded Type: Countersink Drill Bit Set Number of Pieces: 12 Sizes Included: #4, #6, #8, #10, #12 Shank Size: 1/4 in Hex Material: High-Speed Steel (Titanium Coated) Features: Adjustable Depth, Two-Flute Design, Magnetic Extension, Replaceable Bits Application: Woodworking, Drilling, Fastening Case Included: Yes