1/2" - 1/16" Step Drill Bits, single cutting edge,Black Oxide, Dual Straight Flute

Milwaukee 48-89-9208 – #8 Step Drill Bit for Steel and Plastic, 1/2" to 1"

The Milwaukee 48-89-9208 #8 Step Drill Bit is engineered for precision and durability in metal and plastic drilling applications. With a dual-flute design, this high-speed steel bit minimizes bit walking, improves control, and delivers faster chip removal. It covers 9 incremental hole sizes from 1/2" to 1", eliminating the need to switch between multiple standard bits during conduit and knockout operations.

Designed with a Rapid Strike™ tip and coated in black oxide for improved wear resistance, this step bit supports fast starts, extended tool life, and reduced heat buildup during repetitive drilling. A 3-flat shank prevents chuck slippage under high torque conditions, making it suitable for cordless tool use in jobsite conditions.

Performance Features

• Hole Size Range: 1/2" to 1", with nine 1/16" steps
• Rapid Strike™ Tip: Delivers fast starts and minimizes walking on curved surfaces
• Dual-Flute Geometry: Improves control and efficiency while reducing heat generation
• Black Oxide Coating: Enhances wear resistance and cutting performance
• Laser-Etched Step Markings: Ensure easy identification of hole sizes during drilling
• 3-Flat Shank Design: Locks securely into standard drill chucks, reducing bit slip

Technical Specifications

• Product Number: 48-89-9208
• Material: High-speed steel with black oxide finish
• Step Increments: 1/16"
• Cutting Range: 1/2" to 1"
• Shank Type: 3-flat, 3/8" diameter
• Application: Steel, plastic, non-ferrous metals

Use Recommendations

This bit is designed for use with high-torque cordless drills in low-speed settings. Ideal for sheet metal, electrical panels, and rough-in boxes where multiple hole sizes are required. Ensure proper drill speed is selected to prevent excessive heat and preserve cutting edge integrity.

Contractor Notes

The Milwaukee #8 step bit is a reliable option for installers needing repeatable hole sizing in light-gauge steel or rigid plastic. The step geometry supports smooth transitions without catching, and the etched markings eliminate guesswork during layout or retrofit work. Pair with cutting oil when working with harder materials for optimal results.