Professional 3-Piece HSS Straight Groove Step Drill Bit Set – Industrial-Grade Core Drilling Tools

Achieve professional-standard precision with this 3-Piece HSS Straight Groove Step Drill Bit Set. Engineered for versatility, this industrial-grade set includes three specialized bits (3-12mm, 4-12mm, and 4-20mm) designed to cut clean, accurate holes in wood, metal, and plastic. Featuring a high-performance Nitride Black coating for reduced friction and heat, these bits are equipped with a universal Hex Shank for secure attachment to standard power tools, making them an essential addition to any professional toolkit.

Key Features

• Industrial-Grade HSS Construction provides exceptional durability and strength for high-speed drilling through tough materials.

• High-Performance Nitride Black Coating enhances wear resistance and significantly reduces friction for smoother, cooler operation.

• Straight Groove Design ensures efficient chip removal and clear visibility during precision hole cutting.

• Universal 6.3mm Hex Shank provides a professional-standard, secure fit that prevents slippage in both standard and impact drivers.

• Multifunctional 3-Piece Set offers a wide range of sizing options (3-12mm, 4-12mm, and 4-20mm) for various project requirements.

• Precision Step Gradients allow for effortless deburring and multi-sized drilling with a single tool.

Why Choose This Step Drill Bit Set

Standard drill bits often require frequent tool changes and can wander on metal surfaces. This professional-standard set offers an industrial-grade alternative by allowing you to drill multiple hole sizes with a single bit, saving time and increasing accuracy. The Nitride Black finish not only extends the tool's life but also prevents material from sticking to the flutes, ensuring clean results on every job.

Perfect For

• Metalworking and HVAC Projects requiring precise holes in sheet metal, aluminum, and copper.

• Electrical and Plumbing Installations for creating smooth conduit or pipe entries.

• General Home Repairs and DIY providing a versatile solution for plastic and wood drilling.

• Professional Workshops looking for reliable, long-lasting core drilling tools.

Specifications

• Material: High-Speed Steel (HSS).

• Coating: Nitride Black.

• Shank Type: 6.3mm Hex Shank.

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

Size Guide