Cobalt Step Bit Kit (3PC) - Milwaukee Electric Tools

The Milwaukee 48-89-9291 Cobalt Step Bit Kit (3PC) is engineered for professional technicians and mechanics who demand consistent, predictable performance in daily metal drilling applications. Designed for high-heat and heavy-duty use across automotive, industrial, and electrical fields, these cobalt step bits deliver clean, precise holes while significantly reducing the frequency of bit changes and rework. This kit offers up to 15 times longer life in stainless steel and over 1,000 holes in mild steel.

Key Features

• Cobalt Alloy Construction: Built to withstand extreme heat and abrasion, these bits maintain edge sharpness and offer an extended service life, performing significantly longer in stainless steel and mild steel compared to standard HSS step bits. They deliver up to 15X the life in stainless steel.
• Multi-Diameter Step Design: This 3-piece kit covers multiple hole sizes, from 1/8" to 1-1/8", reducing the need for frequent bit swaps when working through various materials and ensuring versatility for diverse projects.
• Rapid Strike Tip™: Engineered for fast and accurate starts, this feature prevents bit walking on smooth surfaces and allows for 2X faster drilling in challenging materials like stainless steel.
• Precision-Machined Cutting Edges: Designed to produce round, burr-reduced holes, minimizing the need for deburring and saving valuable time on body, chassis, and panel work.
• Optimized Flute Geometry: The elongated dual-flute design ensures efficient chip evacuation and superior heat management, promoting smoother cutting and reducing binding in sheet metal and structural components.
• 3-Flat Secure-Grip™ Shanks: These shanks reduce bit slippage in the chuck, enhancing stability and control during drilling operations.

Applications

This 3-piece cobalt step bit kit is suitable for corded or cordless drills and drill presses, proving invaluable for:

• Automotive Body and Chassis Work: Ideal for drilling or enlarging holes in body panels, frames, and brackets for wiring, sensors, and hardware on passenger vehicles, light trucks, and commercial fleets.
• Fabrication and Upfitting: Creating precise mount points for aftermarket lighting, auxiliary equipment, and custom brackets in automotive or industrial settings.
• Electrical and Industrial: Drilling knockouts and pass-throughs in boxes, panels, and cabinets in manufacturing or maintenance environments.
• Sheet Metal and HVAC: Cutting clean openings in ductwork, plenums, and general sheet stock.

Specifications

• Manufacturer: Milwaukee Electric Tools
• Model Number: 48-89-9291
• Product Name: Cobalt Step Bit Kit (3PC)
• Weight: 1.31 lb
• Dimensions: 8 x 9.88 x 2.44 in (Package Depth: 9.9 in, Package Height: 2.35 in, Width: 2.43 in, Length: 9.87 in, Height: 10.06 in)