7 Pack Countersink Drill Bits Set, Wood Drill Countersink Counterbore 3In1,

Quality is the best value Set of 7 pieces of M2 Screw Drill/Countersink/Counterbore bits combination units are specifically designed for woodworkers. The high quality M2 pilot drill bits are precisely ground on hand drill and match the shapes of wood screws so that screw threads grip for the entire length of the screw. Because the pilot drill bit is detachable and can move up and down in the countersink/counterbore sleeve, it will let you set the unit for a wide range of drill depth to meet multi screw lengths. The cutting angle of the 3 countersink chamfer cutters is 82 degrees, perfect for popular screw heads. The counterbore is 3/8” in diameter, 1/2” in full depth; they are also sharp and hard They will meet your needs from flush countersinking to a full 1/2" of counterbore for dowel buttons or plugs. Units are available for screw sizes 4, 6, 8, 10, 12, 14 and 16. Pilot Drill Size 5/64 (2mm) for #4 Screw Pilot Drill Size 3/32 (2.5mm) for #6 Screw Pilot Drill Size 7/64 (2.8mm) for #8 Screw Pilot Drill Size 1/8 (3.2mm) for #10 Screw Pilot Drill Size 9/64 (3.5mm) for #12 Screw Pilot Drill Size 5/32 (4mm) for #14 Screw Pilot Drill Size 3/16 (4.8mm) for #16 Screw For softwood, we recommend you to use a drill one size smaller than the screw calls for. Package including Seven drill/countersink/counterbores units for screw sizes 4, 6, 8, 10, 12, 14 and 16 Two hex keys Storage case

Product Features

  • 3 in 1 Combination – Our units combine Drill Bit / Countersink / Counterbore in one tool, with which you can get perfect hole for #4 #6 #8 #10 #12 #14 or #16 screws in one step
  • 82 Degrees Countersink 3/8” Counterbore Bits - You can either have the head of the screw fit flush with the surface, or below the surface then conceal it with matching wood plugs; ideal tool for dowel buttons or plugs.
  • Adjustable Cutting Depth – the sharp M2 Pilot Hole Drill Bit is detachable, so you can adjust the drill depth according to the length of your screw; then tighten it with the hex key (included) to the Countersink / Counterbore sleeve
  • Wide Range – Built with 1/4" hex shank to fit most quick-change chuck machines or power drills; Package Includes 7 pieces of M2 Screw Drill/Countersink/Counterbore bits in sizes 5/64”, 3/32”, 7/64”, 1/8”, 9/64”, 5/32” and 3/16”
  • Multi Purposes - The drill bits perform well in softwood or hardwood and serve the needs of most woodworkers; for softwood, we highly recommend to use a drill bit one size smaller than the screw size



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