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M12 FUEL 1/4 Inch Extended Die Grinder - Milwaukee Electric Tools

Part #: 3487-20

The Milwaukee M12 FUEL 1/4 Inch Extended Die Grinder (3487-20) offers corded performance in a compact, cordless design, making it an essential tool for professional technicians and mechanics. Engineered for enhanced access and precise control, this die grinder allows for efficient material removal in challenging applications without the need for air hoses or compressors. Its robust POWERSTATE™ brushless motor and extended shaft are designed to tackle demanding automotive and industrial tasks with superior maneuverability.

Key Features

  • 0.5 HP POWERSTATE™ Brushless Motor: Delivers the power of pneumatic die grinders, providing sustained performance and extended motor life, reaching up to 20,000 RPM for rapid material removal.
  • 4-Inch Extended Shaft: Offers exceptional reach into confined spaces, improving access for intricate work in engine bays, undercarriages, or complex machinery.
  • Cordless Mobility: Eliminates the constraints of hoses and compressors, offering greater flexibility and quicker setup for on-site or in-shop tasks.
  • 4-Mode RPM Control & Variable Speed Trigger: Provides precise control over grinding speed, allowing technicians to adapt the tool's performance to different materials and applications.
  • Ergonomic Design with Shadowless LED Work Light: Ensures comfortable handling during prolonged use and illuminates the work surface for improved visibility in dimly lit areas.
  • Spindle Lock with One-Wrench Accessory Change: Facilitates quick and efficient swapping of 1/4 inch shank accessories, minimizing downtime.
  • M12™ System Compatibility: Part of the extensive M12™ system, offering compatibility with over 250 tools for a versatile professional toolkit.

Applications

This professional-grade extended die grinder is ideal for a variety of tasks requiring precision and access in automotive and industrial environments, including:

  • Porting and polishing cylinder heads, manifolds, and exhaust systems.
  • Deburring, grinding, and shaping metal components in tight spaces.
  • Preparation of surfaces for welding or sealing.
  • Removal of gaskets, rust, and paint in restricted areas.
Only 1 left in stock - order soon
List: $418.00 Save: $123.86

$294.14

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This product was added to our catalog on Friday 15 May, 2026.

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