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Milwaukee 2781-20 M18 FUEL 4-1/2″ / 5″ Grinder with Slide Switch Lock-On – Cordless Power Tool

Model: 2781-20

$169.99

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M18 FUEL 4-1/2″ / 5″ Grinder with Slide Switch Lock-On – Cordless Power Tool

The Milwaukee M18 FUEL 4-1/2″ / 5″ Grinder (2781-20) is the world’s first cordless grinder to deliver the power of a corded model, offering unmatched performance, durability, and convenience. Designed for demanding professionals, this grinder provides up to 2X more run time and 10X longer motor life for superior productivity on every job.

Powered by the POWERSTATE™ Brushless Motor, this tool delivers maximum sustained power for tough grinding, surface preparation, and cutting applications. The REDLINK PLUS™ Intelligence system ensures optimized performance and protects the tool from overload and overheating. The REDLITHIUM XC5.0 Battery Pack (sold separately) offers 4X more run time and 20% more power for extended use.

With a thin, balanced body design and an anti-vibration side handle, the M18 FUEL™ Grinder provides ultimate comfort and control. It features 100% tool-free accessory changes and guard adjustments to reduce downtime, while the slide switch with lock-on enhances ease of use during extended grinding tasks.

Key Features:

  • POWERSTATE Brushless Motor – Provides maximum power with up to 10X longer motor life.
  • REDLINK PLUS Intelligence – Prevents overloads and ensures optimal performance with advanced electronic communication.
  • REDLITHIUM XC5.0 Battery Compatibility – Offers 2X more run time and superior durability (battery sold separately).
  • Tool-Free Design – Quick accessory and guard changes without a wrench for maximum productivity.
  • Slide Switch with Lock-On – Reduces fatigue during continuous use.
  • Durable Construction – Same metal housing and gearing system as Milwaukee’s corded grinders.
  • Optimized Balance and Comfort – Thin body design and vibration reduction for better handling.

Included Components:

  • (1) M18 FUEL™ 4-1/2″ / 5″ Grinder with Slide Switch Lock-On (2781-20)
  • Battery and charger sold separately

Technical Specifications:

Specification Details
Model Number 2781-20
Battery System M18™
Power Source Cordless
Arbor Size 5/8″-11
Speed 8,500 RPM
Switch Type Slide with Lock-On
Trigger Lock Yes
Tool-Free Guard Yes
Vibration Reduction Yes
Length 15 in
Weight 5.8 lbs
Voltage 18V
Warranty 5 Year Limited Warranty

The M18 FUEL™ 4-1/2″ / 5″ Grinder with Slide Switch Lock-On provides unmatched cordless performance with the power and durability of a corded tool — a must-have for professionals seeking high efficiency and mobility.

Explore more professional-grade Milwaukee M18™ power tools at ToolKing.com.