7 Pcs M2 Countersink Drill Bit Set

Description: This set includes 7 countersink drill bits, designed for drilling holes for #4 #6 #8 #10 #12 screws. The set features an adjustable depth stop and a 1/4" quick release hex shank. The sizes of the drill bits are 5/64”, 3/32”, 7/64”, 1/8”, and 9/64”, all of which are included in the set. Additionally, 2 Allen wrenches are included for convenience.

Functions: These drill bits are used to ensure that the heads of screws are below the surface of the material and can be concealed with matching wood plugs. They also allow the heads of screws to fit flush with the surface.

Compatibilities: The pilot drill bits in this set are made of high-quality M2 steel and can be detached. They can be moved up and down in the countersink/counterbore sleeve to adjust the drill depth to meet the length of different screws. The cutting angle of the chamfer cutters on the countersink bits is 82 degrees, making them suitable for popular screw heads. The counterbore has a diameter of 3/8" and a full depth of 1/2", providing flexibility for both flush countersinking and full counterboring for dowel buttons or plugs.

Reference Chart: - Size 5/64 (2mm) for #4 Screw - Size 3/32 (2.5mm) for #6 Screw - Size 7/64 (2.8mm) for #8 Screw - Size 1/8 (3.2mm) for #10 Screw - Size 1/8 (3.2mm) for #10 Screw - Size 9/64 (3.5mm) for #12 Screw - Size 9/64 (3.5mm) for #12 Screw

For softwood, it is recommended to use a drill bit one size smaller than the screw calls for.

Features: - 3 in 1 Function: These drill bits can be used for drilling, countersinking, and counterboring in one step, allowing for quicker and easier work. - Meet All Needs: The set includes popular 82 degrees countersink and 3/8" counterbore bits, ensuring that all your needs are met. - Adjustable Cutting Depth: The countersink drill bits feature an adjustable depth stop, allowing you to customize the depth to fit the length of your screws. Simply tighten the pilot drill bit with the included hex key to the countersink/counterbore sleeve. - Wide Compatibility: The 1/4" hex shank design makes these drill bits compatible with most quick-change chuck machines or power drills. - Set Includes: The set includes 7 pieces of drill/countersink/counterbore 3in1 bits in sizes 5/64”, 3/32”, 7/64”, 1/8”, 1/8”, 9/64”, and 9/64”.

For both hardwood and softwood, these HSS M2 grade countersink drill bits perform well and fulfill the needs of most woodworkers. When drilling softwood, it is recommended to use a drill bit one size smaller than the screw calls for.

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