Tungsten Carbide Countersink Drill Bit Set, 90° 4-Flute Woodworking Bits with Adjustable Depth Stop (2.8/3.2/3.5/4.0mm) for Clean Screw Installation in Hardwood Includes Storage Case Wrench

• Complete 4-Size Set for All Woodworking Needs：countersink drill bit set comprehensive set includes five professional countersink bits in four essential diameters: 2.8mm, 3.2mm, 3.5mm, and 4.0mm. Perfect for creating pilot holes, countersinking, and achieving flawless screw heads in a wide range of wood types and project sizes.
• 4-Flute Tungsten Carbide Design：tungsten carbide wood bits Featuring an advanced 4-flute cutting geometry with guiding flutes for faster, smoother cutting. The tungsten carbide alloy cutting edges stay sharp longer, creating clean, precise countersink holes for perfect screw installation and a professional finish every time.
• Precision Control with Adjustable Depth Stop：90 degree countersink set Each bit is equipped with a precise, adjustable depth stop and an extra frictionless depth control ring. This allows you to set the exact drilling depth for consistent, repeatable results in countersinking and drilling tasks, eliminating guesswork and errors.
• Aluminum Alloy Body Efficient Chip Removal：aluminum alloy countersink Built with a robust aluminum alloy body that resists bending and wear for long-lasting durability. The optimized flute design efficiently removes wood chips and debris during drilling, preventing clogging and ensuring cleaner holes with improved drilling speed.
• Complete Ready-to-Use Professional Kit：professional woodworking drill bits Includes a convenient storage case that holds all five bits, an extra depth control ring, and a hex wrench for easy adjustments. Keep your tools organized, protected, and portable—ideal for workshops, job sites, DIY projects, and professional carpentry use.

[VERSATILE DRILL SIZES] This set includes five countersink bits with diameters of 2.8mm, 3.2mm, 3.5mm, and 4.0mm to cater to a wide range of drilling needs, providing versatility for any project. [EFFICIENT 4 FLUTE DESIGN] Featuring a 4 flute cutting design with tungsten carbide alloy edges, these bits ensure and more efficient cutting, resulting in clean and professional finishes. [ROBUST CONSTRUCTION] Crafted from excellent aluminum alloy, these countersink wood drill bits are exceptionally resistant, guaranteeing long-lasting performance for both professional and DIY users. [EFFICIENT CHIP REMOVAL] Effectively removes debris during drilling, enhancing drilling efficiency and reducing build-up for clean and accurate results. [ADJUSTABLE DEPTH STOP] Equipped with an adjustable depth stop feature, these bits allow users to set drilling depth as needed, with an extra frictionless depth control ring for easy tool organization. Spec: Item Type: Countersink Drill Bit Set Material: Aluminum Alloy Body, 6542 Blade Shank Size: Approx. 6.25mm / 0.25in Drill Bit Size: Approx. 2.8mm / 0.11in, 3.2mm / 0.13in, 3.5mm / 0.14in, 4mm / 0.16in Cutting Blade Diameter: Approx. 10mm / 0.39in Countersink Angle: 90° Application: Hand Drills, Charging Piles, Bench Drills, etc. Applicable Materials: Suitable for deep holes in hard wood, used for drilling screw holes in wood and sinking screw heads. Package List： 4 x Countersink Drill Bits (2.8mm, 3.2mm, 3.5mm, 4.0mm) 1 x Hex Wrench 1 x Plastic Box Note：