Milwaukee 48-89-9221 3-Piece Black Oxide Steel Dual-Flute Step Drill Bit Set

Milwaukee 48-89-9221 3-Piece Black Oxide Steel Dual-Flute Step Drill Bit Set

The Milwaukee 48-89-9221 3-Piece Black Oxide Steel Dual-Flute Step Drill Bit Set is designed to give tradespeople and DIYers a versatile, reliable way to drill clean, accurately sized holes in a single pass. This 3-piece set is manufactured from black oxide steel, a material chosen for its resistance to heat buildup and wear during repeated drilling cycles. Each bit in the set features a dual-flute design that helps evacuate chips efficiently, resulting in smoother cuts, reduced bit walking, and improved overall accuracy compared to single-flute alternatives. Because each step drill bit steps up through multiple diameters along its length, this Milwaukee set lets users drill a range of hole sizes without constantly swapping tools, saving time on the job. Whether used for electrical, HVAC, automotive, or general metalworking tasks, this set is built to be a dependable addition to any tool collection.

Key Features

• 3-Piece Drill Bit Set: The Milwaukee 48-89-9221 set includes three step drill bits, giving users a range of stepped hole diameters covered across the set for greater versatility on the job.
• Black Oxide Steel Construction: Each bit is manufactured from black oxide steel, a durable material known for its resistance to wear and heat generated during repeated drilling applications.
• Dual-Flute Design: The dual-flute geometry is engineered to clear chips more efficiently than single-flute step bits, helping to produce cleaner, more accurate holes with less binding.
• Black Oxide Finish: The black oxide surface treatment helps improve corrosion resistance and reduces friction as the bit cuts through material, extending usable tool life.
• Stepped Bit Profile: The stepped design allows each bit to drill progressively larger holes along its length, reducing the number of bit changes needed to complete a job.
• Milwaukee Reliability: Backed by the Milwaukee brand, this set is built to meet the demands of professional trade work as well as everyday DIY projects.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Sheet Metal Fabrication and Enlarging Pre-Drilled Holes
• Electrical and HVAC Installation Work
• Automotive Repair and Metalworking Projects
• General Maintenance and Repair Tasks
• Professional Trade and DIY Job Sites

Why Milwaukee?

Milwaukee has built a reputation among professional trades for delivering tools engineered to perform under demanding job-site conditions. The 48-89-9221 step drill bit set's black oxide steel construction and dual-flute design reflect Milwaukee's commitment to engineering tools that hold up to repeated use while maintaining cutting performance. For professionals and serious DIYers who need dependable performance from their cutting tools, the Milwaukee 48-89-9221 3-Piece Step Drill Bit Set offers a trusted option backed by the Milwaukee name.