Ingco 4-Piece Countersink Drill Bit Set | HSS Carbon Steel 90-Degree Round Shank Woodworking Chamfer Set (DBCS1241)

The Ingco DBCS1241 Countersink Drill Bit Set is a professional woodworking accessory kit engineered to create clean, flush finishes for screw heads in timber, plastic, and soft metal panels. Designed to bevel the rim of pre-drilled holes, these cutters allow countersunk screws to sit perfectly level with or slightly below the surface substrate, eliminating protruding screw heads and preventing material splitting during final assembly.

Each bit in this 4-piece collection is manufactured from high-grade, heat-treated High-Speed Steel (HSS) to ensure clean cutting performance and long-lasting edge sharpness. The bits feature a universal 90-degree chamfer angle layout, matching the standard geometry of most wood and machine screws. Engineered with an open, flute-less deburring design or a specialized wide-groove chip clearance slot, these bits facilitate rapid material removal and prevent wood shavings from clogging the cutting edge. Equipped with a standard cylindrical round shank, the bits offer universal compatibility with standard cordless drills, electric screwdrivers, and stable bench drill presses.

Technical Specifications

• Brand: INGCO

• Model Number: DBCS1241

• Product Type: Countersink Drill Bit / Chamfer Cutter Set

• Total Tool Count: 4 Pieces Set

• Sizing Matrix Included (Sleeve Capacity Range):

  • 2mm to 5mm Length Capacity

  • 5mm to 10mm Length Capacity

  • 10mm to 15mm Length Capacity

  • 15mm to 20mm Length Capacity

• Chamfer Geometry Angle: 90-Degree Cutting Angle

• Shank Design: Universal Cylindrical Round Shank

• Material Composition: Forged Heat-Treated High-Speed Steel (HSS)

• Cutting Edge Layout: Flute-less Deburring and Chip-Evacuation Slot Configuration

• Primary Target Substrates: Natural softwoods, dense hardwoods, medium-density fiberboard (MDF), plywood layers, acrylic plastics, PVC panels, and soft aluminum sheets

• Primary Applications: Sinking wood screw heads flush, deburring clean edges on drilled metal pipes, prepping custom cabinetry panels, chamfering plastic casing holes, and finish carpentry assemblies

• Packaging Type: Packed by protective double blister layout