3-Piece Nitride Black HSS Step Drill Bit Set

Upgrade your tool kit with this professional-grade HSS Straight Groove Step Drill Bit Set. Engineered from high-speed steel and finished with a Nitride Black coating, these bits are designed for superior hardness and wear resistance. This 3-piece set provides a versatile solution for creating various hole sizes in Wood, Metal, Aluminum, and Plastic, making it an essential Core Drilling Tool for any DIY enthusiast or professional contractor.

Key Features

• High-Speed Steel (HSS) Construction: Crafted from premium HSS steel to ensure durability and long-lasting sharpness during high-intensity tasks.

• Nitride Black Finish: The specialized coating reduces friction and heat, extending the life of the bit while providing a smooth cutting experience.

• Versatile 3-Piece Range: Includes three essential sizes (3-12mm, 4-12mm, and 4-20mm) to handle a wide variety of hole diameters with a single tool.

• Two-Groove Design: Engineered for faster, smoother, and cleaner cutting by effectively removing debris during the drilling process.

• Anti-Slip Hex Shank: Features a face shank design that ensures a secure fit in your drill chuck, preventing slippage and improving safety.

• Clear Depth Markings: Each step is laser-etched with the specific diameter, allowing for precise and accurate drilling every time.

Why Choose This Step Drill Bit Set Creating different sized holes traditionally requires a massive collection of individual bits, but this Step Drill Bit Set simplifies the process. The Straight Groove design is optimized for materials up to 5mm thick, offering a "one-bit-does-it-all" convenience for tasks involving Insulating Boards, aluminum sheeting, or plastic panels. Whether you are reaming an existing hole or starting a new project, the nitride finish ensures the bits stay cooler and sharper longer than standard steel alternatives.

Perfect For

• Metalworking & Plumbing: Easily punching clean holes in thin aluminum and copper sheeting.

• Home Repairs: Adjusting holes in plastic outlet boxes, wood panels, or PVC piping.

• Electrical Work: Sizing holes in junction boxes and insulating boards with precision.

Product Specs

• Material: High-Speed Steel (HSS).

• Color: Nitride Black.

• Shank Type: Hex Shank (Anti-slip).

• Thickness Capacity: Suitable for materials up to approx. 0.2 in (5mm).

• Sizes Included: 3-12mm, 4-12mm, and 4-20mm.

Experience the precision and durability of our Nitride Black Step Drill Bit Set.