Ingco 12-Piece Professional HSS Twist Drill Bit Set - Fully Ground High-Speed Steel Metal Drilling Kit from 1.5mm to 10.0mm (AKDB1125)

Equipping your workshop with low-grade or mismatched drill bits makes drilling through structural metals, plastics, and dense timber an exhausting chore. Cheap bits quickly overheat, lose their cutting edges, and walk across smooth surfaces, leading to off-center holes and ruined workpieces. The Ingco AKDB1125 12-Piece Professional HSS Twist Drill Bit Set is an industrial-grade workspace collection engineered to deliver clean, effortless, and highly accurate boring performance. Spanning a highly versatile diameter range from a delicate 1.5mm up to a heavy 10.0mm, this factory-matched set equips tradespeople and DIY enthusiasts alike with the exact sizes needed for everyday plumbing, electrical, automotive, and metal fabrication tasks.

The exceptional structural durability and cutting efficiency of these bits stem from their premium fully ground High-Speed Steel (HSS) construction. Each bit is precision-machined from solid steel stock and treated with a specialized amber surface finish that significantly lowers running friction while resisting extreme thermal wear. Outfitted with a self-centering 135-degree split point cutting tip, these bits bite directly into smooth metals upon contact without drifting, completely eliminating the need for a pre-punched pilot hole. Built with standard cylindrical straight shanks, this high-performance assortment integrates seamlessly into any standard manual chuck or cordless drill driver, providing perfectly square tracking and high-volume chip evacuation on every project.

Technical Specifications

• Brand: INGCO

• Model: AKDB1125

• Product Type: Fully Ground High-Speed Steel (HSS) Twist Drill Bit Set

• Total Set Quantity: 12 Pieces Per Retail Pack Assortment

• Material Composition: Premium Industrial-Grade High-Speed Steel (HSS)

• Manufacturing Treatment: Fully ground from solid steel with a specialized amber anti-friction thermal treatment

• Cutting Head Geometry: 135-Degree Split Point Tip Layout (Self-centering, anti-walk architecture)

• Shank Interface Layout: Standard Straight Cylindrical Shank (Universal manual/keyed chuck fitment)

• Master Size Assortment Breakdown:

  • 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.2mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 6.0mm, 8.0mm, 10.0mm

• Machine Compatibility Match: Universal installation suitability for all standard 20V cordless power drills, manual corded impact drills, and industrial workshop bench drill presses (Perfect companion kit for the Ingco CDLI2002 and ID8508 series)

• Primary Target Substrates: Carbon steel plates, sheet metals, iron frames, aluminum alloys, copper sheets, brass fixtures, PVC pipes, dense structural plastics, hardwoods, softwoods, and composite plywood panels

• Primary Applications: Drilling precise mounting holes for metal fasteners, sheet metal fabrications, automotive repairs, structural framing, cabinetry work, and routing pilot paths

• Packaging Type: Supplied safely enclosed inside a high-visibility commercial plastic index box layout with custom-molded size slots for absolute cutting-edge safety and clean warehouse shelf inventory tracking