Milwaukee 48-89-9291 3-Piece Cobalt Step Drill Bit Set

The Milwaukee 48-89-9291 is a professional-grade 3-piece cobalt step drill bit set designed for drilling multiple hole sizes in thin materials with a single bit. This set includes three of Milwaukee's most popular step bit sizes: #1, #4, and #9, providing versatile hole-making capability for electricians, HVAC technicians, and metalworkers.

Key Features:

• Cobalt construction for enhanced heat resistance and extended bit life in tough materials
• Step design allows drilling multiple hole sizes without changing bits
• Double-cutting flutes for faster material removal and reduced friction
• Laser-etched size markings for easy hole size identification
• 3/8-inch universal shank fits most drill chucks
• Optimized for drilling in sheet metal, plastics, wood, and thin-gauge stainless steel

Each bit features Milwaukee's precision-ground cutting edges that start on contact and eliminate the need for a pilot hole. The cobalt alloy construction maintains sharp cutting edges longer than standard high-speed steel, making this set ideal for repetitive drilling applications in metal fabrication, electrical panel work, and automotive repair.