Model#: MILN2784-20

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Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 120 day money back guarantee
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New items with possible minor cosmetic damage; CPO 120 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Milwaukee 2784-20 M18 FUEL 1/4 in. Brushless Die Grinder (Bare Tool)

  • Note: Battery & Charger sold separately
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Product Overview


The world’s first brushless die grinder that delivers corded performance with over 20 minutes of grinding and up to 10X longer motor life.The M18 FUEL 1/4 in. Die Grinder delivers maximum sustained power with 20,000 RPMs capable of running carbide burrs or up to 3 in. flap wheels for grinding or surface preparation applications. The M18 REDLITHIUM XC5.0 Battery (sold separately) provides up to 25 minutes of grinding with superior pack construction and electronics. The POWERSTATE Brushless Motor provides up to 10X longer tool life and lower cost of ownership than traditional brushed motors. The die grinder features REDLINK PLUS Intelligence, the most advanced system of cordless power tool electronics, for maximum performance and longest tool life.
  • POWERSTATE brushless motor delivers constant power under heavy load for maximum performance
  • REDLINK PLUS intelligence system ensure optimal performance and overload protection to prevent damage during heavy applications
  • REDLITHIUM battery pack provides superior power, performance and runtimes than competing battery packs
  • Corded performance from a lightweight and powerful cordless grinder
  • M18 FUEL 1/4 in. Brushless Die Grinder - 2784-20
  • Bare Tool - Battery & Charger Sold Separately


Series: FUEL
Cordless: Yes
Length: 18 in.
Height: 4.50 in.
Weight: 3.65 lbs.
Batteries Included: 0
Battery System: FUEL
Battery Type: Li-Ion
Bluetooth Compatibility: No
CSA Safety: Yes
Case Included: No
Charger Included: No
Collet Size: 1/4 in
ETL Safety: Yes
Motor Type: Brushed
No-Load Speed (RPM): 20000
Powered Tool Power Source: Electric - Cordless
Switch Settings: Lock-On
Switch Type: Lock-On Slide
UL Safety: Yes
Variable Speed: No
Voltage: 120V
Wifi compatibility: No



4.8 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (4)
Powerful (3)
Easy To Use (2)
Ergonomic Design (1)
Battery Longevity (if applicable) (1)
Best Uses
Frequent Use (2)
Home Repair (2)
Jobsite (2)
Heavy Duty Requirements (1)
Yes, I would recommend this to a friend
Best Uses
Love the speed it’s a little bit big for the places I get but overall pleased
March 18, 2019
3 months ago
Describe Yourself:
Avid Do-it-Yourselfer
Yes, I would recommend this to a friend
Ergonomic Design
Best Uses
Frequent Use
cordless die grinder
We use this tool to grind rough engine casting areas, clearance the bottom of the cylinders for honing and create rod clearance on stroker engines.
February 24, 2019
4 months ago
Describe Yourself:
Yes, I would recommend this to a friend
Easy To Use
Best Uses
Frequent Use
Heavy Duty Requirements
Large Projects
Small Projects
Home Repair
WOW - this thing rips!
This tool has more power than my air-powered die grinder! In situations that don't require a compact tool, this is my first choice!
August 11, 2018
10 months ago
Describe Yourself:
Yes, I would recommend this to a friend
Easy To Use
Battery Longevity (if applicable)
Best Uses
Home Repair
Awesome tool I wish I had bought Sonner
June 2, 2018
1 year ago
Describe Yourself:
Avid Do-it-Yourselfer
the tool I have been waiting for !!!!
as a fabricacter the ease od access with no cord or air line is awesome
April 10, 2017
Originally posted at

Questions & Answers

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Browse 6 questions Browse 6 questions and 12 answers
Can I use this tool with a cut-off wheel? If so, can I easily find cutting wheels to fit?
Jerry on Jun 18, 2017
BEST ANSWER: This is a die grinder not a cut off tool in order to use as a cutoff tool you would have to buy Arbor adapter
Is it a variable speed ?
A shopper on Oct 23, 2018
BEST ANSWER: Model 2784-20 is not a variable speed unit.
Is there a gard for a cutting wheel ?
A shopper on Sep 8, 2018
BEST ANSWER: No guard, you maybe better off with an angle grinder.
Can this tool also be used to Tap steel with a “Tap”(whichever thread count needed)?
A shopper on Jul 18, 2018
BEST ANSWER: No - it’s rpms are too high. If it’s thinner metal, it would be better to use a Milwaukee drill with a self drilling tap (combo tap).
What RPM does it run at ?
A shopper on Jan 8, 2018
BEST ANSWER: 20,000 - it really zings, and has plenty of power!
Does this come with the wrenches to change the dies ?
tjmoose on Mar 4, 2019
BEST ANSWER: Model 2784-20 will include the following items listed below:

(1) M18 FUEL™ 1/4" Die Grinder (Tool Only) (2784-20)
(1) 1/4" Collet
(2) Wrench