Ingco 4-22mm Professional HSS Titanium-Coated Step Drill Bit – 10-Step High-Speed Steel Cone Hole Cutter for Metal, Plastic, and Wood (AKSDS42203)

Drilling clean, varying-diameter holes in sheet metal, aluminum plates, or structural plastics usually requires swapping between multiple drill bits, leading to slower progress and messy, uneven holes. Standard twist drills often snag, warp, or create jagged burrs when cutting thin-gauge materials. The Ingco AKSDS42203 Professional HSS Titanium-Coated Step Drill Bit is a high-efficiency single-bit solution engineered to smoothly deburr, enlarge, and cut 10 distinct hole sizes. Forged from premium High-Speed Steel (HSS 4341) and enhanced with a friction-reducing titanium coating, this versatile cone cutter enables metal fabricators, electricians, HVAC installers, and DIYers to drill clean, precise holes without constantly stopping to change tools.

The exceptional durability and smooth drilling action of this step bit stem from its dual-flute design and step-increment engineering. The bit features 10 clearly marked increments ranging from 4mm up to 22mm, with a uniform 2mm depth step that cuts smoothly without aggressive tearing. Its titanium-nitride finish deflects operational heat buildup, preventing the cutting edges from dulling prematurely under high-speed drilling friction. Outfitted with a standard round shank base, it locks securely into traditional three-jaw drill chucks, maintaining excellent concentric alignment to eliminate bit wobbling and deliver perfectly round, professional-grade entries.

Key Features

• 10-in-1 Step Versatility – Features 10 incremental steps from 4mm to 22mm on a single cone, removing the need to carry an entire index of individual twist drill bits.

• Industrial HSS 4341 Construction – Forged from premium high-speed steel optimized for structural hardness, toughness, and long wear resistance.

• Thermal Titanium Finishing – Coated in a sleek titanium layer that drastically lowers surface friction, eases chip clearing, and resists heat degradation.

• Automatic Hole Deburring – The specialized shoulder transition on each step automatically clean-shaves the entry edge of the hole as it passes through the material.

• Stable Round Shank – Engineered with a standard round shank that seats perfectly flush inside keyless and keyed power drill chuck systems.

• Double-Blister Display Pack – Arrives tightly sealed inside a clear, dust-proof double-blister retail card layout to preserve factory sharpness during transit.

Technical Specifications

• Brand: INGCO

• Model: AKSDS42203

• Product Type: High-Speed Steel Titanium Step Drill Bit / Cone Cutter

• Size Capacity Range: 4 mm to 22 mm

• Step Increment Sizing: 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22 mm (10 Total Steps, 2mm Step Width)

• Shank Profile: Universal Round Shank Fitting

• Core Material Matrix: Premium High-Speed Steel (HSS 4341 Grade)

• Surface Coat Finish: Premium Titanium Nitride (TiN) Finishing

• Primary Machine Compatibility: Fits all standard 10mm (3/8") and 13mm (1/2") three-jaw power drills, cordless drill/drivers, and drill presses

• Primary Target Substrates: Thin mild steels, aluminum plates, copper sheets, brass components, PVC/UPVC conduits, plexiglass, and soft woods

• Primary Applications: Electrical panel knockouts, junction box conduit routing, HVAC sheet metal duct adjustment, custom automotive thin-panel modifications, and general workshop fabrication

Ideal For

Electricians, sheet metal workers, HVAC technicians, automotive mechanics, and DIY enthusiasts who need an agile, single-bit solution to drill clean, multiple-sized holes through metal and plastics without tool changes.

Package Includes

1 × INGCO AKSDS42203 4-22mm HSS Titanium Step Drill Bit

1 × Heavy-Duty Sealed Double-Blister Protective Retail Card Storage Layout