Countersink Drill Bit Set for #4-#12 Screws with Adjustable Depth Stop

This 7-piece Countersink Drill Bit Set is a versatile 3-in-1 solution for woodworking tasks. The set includes drill bits in sizes 5/64", 3/32", 7/64", 1/8", 1/8", 9/64", and 9/64", allowing you to create the perfect countersunk and counterbored holes for #4, #6, #8, #10, and #12 screws.

The high-quality M2 pilot drill bits are precisely ground and detachable, enabling you to adjust the drill depth by moving the bit up and down within the countersink/counterbore sleeve. This flexibility ensures the screw heads can be positioned either flush with the surface or recessed below, allowing you to conceal them with matching wood plugs.

The 82-degree cutting angle of the 3 countersink chamfer cutters is ideal for popular screw heads. The 3/8" diameter counterbore has a full depth of 1/2", catering to your needs from flush countersinking to a deeper 1/2" counterbore for dowel buttons or plugs.

For softwood applications, it is recommended to use a drill bit one size smaller than the screw size to achieve the best results. The HSS M2 grade countersink drill bits perform well in both softwood and hardwood, making them a versatile choice for most woodworking projects.

The set comes with a convenient reference chart that provides the recommended bit size for each screw size, simplifying the selection process. The 1/4" hex shank design ensures compatibility with most quick-change chuck machines and power drills, offering you the flexibility to use this set with a variety of tools.

One of the key features of this Countersink Drill Bit Set is its 3-in-1 functionality. With a single bit, you can drill, countersink, and counterbore in one step, saving you time and effort compared to using multiple tools. This streamlined approach allows you to create perfectly prepared holes for your screw fastening needs.

Included in the set are 2 Allen wrenches, which enable you to securely tighten the pilot drill bit to the countersink/counterbore sleeve, ensuring a stable and adjustable depth setting for your specific screw lengths.

Whether you're working with softwood or hardwood, this Countersink Drill Bit Set has you covered. Its versatility, precision, and user-friendly design make it a valuable addition to any woodworker's tool kit, allowing you to achieve professional-looking results with ease.

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