Countersink Drill Bit Set, 12Pcs Wood Counter Sink Drill Bits for #4, #6, #8, #10, #12 Screws, 1/4" Hex Shank, Adjustable Bit Holder with Magnetic Extension and Replaceable Drill Bits for Woodworking

• 12-Piece Set – This countersink drill bit set for wood comprises 5 countersink bits (sizes #4, #6, #8, #10, #12), 5 replaceable drill bits, a 60mm magnetic extension bit holder, and an Allen key.
• High-Quality Material – Crafted from premium high-speed steel, these drill bits offer excellent hardness and durability. They provide strong cutting performance, high wear resistance, and are suitable for both softwood and hardwood.
• Efficient & Strong – Featuring sharp blades and an 82° countersink angle, these bits produce clean. The upgraded spiral flute design effectively reduces cutting resistance and prevents chip buildup. Integrating drilling, countersinking, and reaming functions, it significantly enhances work efficiency.
• Adjustable Drilling Depth – Using the included hex key, the countersink depth can be easily adjusted and different drill cores can be replaced according to job requirements. This enables flush screw installation and tight fitting, while also adapting to different wood thicknesses.
• Quick Change Design – Equipped with a standard 1/4-inch quick-release hex shank, it ensures stable clamping and reduces slipping. Compatible with most drill models for rapid size changes, enabling a smooth and efficient working experience.
• Wide Compatibility – Compatible with hand drills, bench drills, electric drills and impact drivers. Ideal for solid wood boards, plastic sheets, PVC panels, and wood-based products. For optimal performance, extended use on hardwood is not recommended.

12-Pack 3-In-1 Professional Woodworking Countersink Drill Bit Set | Drill the pilot, countersink and counterbore The professional counter sink drill bits for wood gives you the power to create precise, clean, and perfectly recessed holes for screws in wood, plastic, and PVC. Ideal for woodworking, furniture assembly, cabinetry, DIY projects, and general repairs. Specifications: Material: High-Speed Steel Shank: 6mm Hex Countersink Angle: 82° Chamfer Screw Compatibility: #4, #6, #8, #10, #12 How to Use: 1. Select the countersink bit matching your screw size. 2. Insert it directly into your drill/driver, or attach it to the magnetic extension for hard-to-reach areas. 3. Drill until the countersink collar reaches the material surface. The hole is now perfectly ready for your screw. 4. Tighten the screw—its head will sit flush and finish. Package Includes: 5-Piece Woodworking Countersink Drill Bits (#4, #6, #8, #10, #12) 5-Piece Replacement Drill Bits 1 x 60mm Magnetic Hex Shank Extension 1 x Hex Key