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Model#: MILN2781-20

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Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 60 day money back guarantee
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New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
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Milwaukee 2781-20 M18 FUEL 18V Cordless Lithium-Ion 4-1/2 in. - 5 in. Slide Switch Grinder with Lock-On (Bare Tool)

Model#: MILN2781-20
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$40.99 (20%)
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The M18 FUEL 4-1/2-in / 5-in Slide Switch Grinder supplies maximum sustained power to complete the toughest grinding, surface preparation and cutting applications. The POWERSTATE Brushless Motor provides up to 10X longer motor life and lower cost of ownership. The M18 REDLITHIUM XC4.0 Battery Pack (Sold Seperately) delivers up to 4X more run time and 20% more power. The grinder features REDLINK PLUS Intelligence, the most advanced system of cordless power tool electronics, for maximum performance.
  • POWER TO GRIND means the World's first cordless grinder with corded performance
  • Same metal housing and gearing system as legendary high performance corded grinders
  • Thin body design and anti-vibration handle provides optimized balance to rest easily in your hands
  • Tool-free accessory changes and guard adjustments mean less downtime during work
  • POWERSTATE Brushless Motor delivers maximum power and up to 10X longer motor life
  • REDLINK PLUS Intelligence provides optimized performance, electronic clutch, and overload protection using total system communication between tool, battery and charger
  • REDLITHIUM XC 4.0 Battery Pack (Sold Separately) provides superior pack construction, electronics, and performance to deliver 2X more run-time and more work over pack life
  • M18 FUEL 4-1/2-in - 5-in Slide Switch Grinder with Lock-On (Bare Tool) -2781-20
  • Flange Nuts
  • Wheel Guard
  • Spanner Wrench
  • Bare Tool - Batteries and Charger Sold Separately


Series: FUEL
Cordless: Yes
Length: 15 in.
Weight: 4.2 lbs.
Power Type: Electric
RPM: 8,500
Spindle Lock: Yes
Spindle Thread: 5/8-in-11
Switch Type: Slide
Tool Free Guard: Yes
Voltage: 18V
Wheel Diameter: 4-1/2 in. / 5 in.

More Versions Of This Item

Item Name Price
MILN2781-22 Milwaukee M18 FUEL 18V Cordless 4-1/2 in. - 5 in. Slide Switch Grinder with Lock-On and 2 REDLITHIUM Batteries
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Product Reviews


by PowerReviews

(based on 2 reviews)

Reviewed by 2 customers

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Great, strong tool.

By J Redneck

from Casper. Wy

Verified Buyer


  • Easier Than Bolt Cutters
  • Great power
  • No Cords To Tangle


    Best Uses

    • Cutting
    • Grindingsmoothing

    I use the grinder for all kinds of projects. Built a gooseneck hitch out of .75 inch plate and .5 inch angle with the grinder and M18 Fuel drill. These cordless tools rock. I don't own a bunch of other brands to compare it to, but I am very happy with it.

    • Was this a gift?:
    • No

    Great grinder

    By MacDaddy

    from Dandridge

    Verified Buyer


    • Long running
    • Powerful


    • none

    Best Uses

    • On the job
    • Sharpening blades

    Debated for a long time before buying a cordless grinder, once they came out with fuel version it was time to purchase. CPO is the only place to buy your Milwaukee tools if you want the best customer service.

    • Was this a gift?:
    • No

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