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Model#: MILN2520-21XC

What are the different product conditions?

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

Milwaukee 2520-21XC M12 FUEL 12V Cordless Hackzall Reciprocating Saw Kit with XC Battery

New $169.00
Recon $159.00
Sale Price:
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(continental U.S.)
In Stock
Ships Monday
  • Due to federal regulations, this product can only be shipped within the continental US. Express delivery not available.

Product Overview


The M12 FUEL HACKZALL is the fastest cutting and most powerful saw in its class, delivering over 4X more run-time, up to 70% faster cutting, and up to 6X longer tool life than competitive saws. The compact, one-handed design provides superior control and the ability to make cuts in tight spaces. Its lightweight design is optimal for overhead cutting applications. The POWERSTATE Brushless Motor outperforms all leading competitors with constant power output, yet runs cooler with no wearable components. REDLINK PLUS Intelligence ensures optimized performance and protects your investment from overload, overheating, and over-discharge. The M12 REDLITHIUM XC 4.0 Ah Battery Pack provides more work per charge and more work over the life of the pack than competitive batteries. The dual gear counter balance mechanism significantly reduces vibration, providing faster starts in metal and reduced user fatigue.
  • One-handed design provides superior control and versatility over a standard recip saw.
  • POWERSTATE Brushless Motor supplies constant power for faster cuts and reduced heat for extended life
  • Compact size allows for cutting in tight spaces, and lightweight makes overhead work easier
  • REDLINK PLUS Intelligence provides optimized performance and overload protection using total system communication between tool, battery and charger
  • REDLITHIUM XC 4.0 Battery Pack provides superior pack construction, more work per charge and more work over the life of the pack than competitive batteries                 
  • M12 FUEL Hackzall Reciprocating Saw - 2520-21XC
  • M12 REDLITHIUM XC 4.0 Ah Extended Capacity Battery Pack - 48-11-2440
  • M12 Lithium-Ion Battery Charger - 48-59-2401
  • Contractor Bag
  • Multi-Material Blade


Series: FUEL
Cordless: Yes
Batteries Included: 1
Battery Amp Hours: 4.0 Ah
Battery Type: Li-Ion
Blade Clamp Type: Tool Free
Orbital Action: No
SPM: 3000
Stroke Length: 5/8 in.
Voltage: 12V



4.9 / 5.0
22 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Yes, I would recommend this to a friend (19)
Powerful (2)
Easy To Use (1)
Yes, I would recommend this to a friend
As usual another great Milwaukee product I have many of their 18V tools and love them all and have been using them since the M18 came out. I also had the 18 volt stuff before the M18 and they have always been great tools the M18 set new standards for 18v tools and now the fuel as done it again. The 199.00 is not a sale price a every day price.
May 20, 2014
Yes, I would recommend this to a friend
Easy To Use
Cuts like a champ
Well balanced. Very strong cutting strokes. Doesn't bog down at all. I think it cuts much better than our makita 18v lithium ion recip saw. I'd spend more and get the fuel line, I have no complaints. I absolutely love the one handed use. We have the fuego one handed corded recip saw that gets a ton of use and this is just as usefu
September 9, 2014
Yes, I would recommend this to a friend
Replaced my old Hackzall with the "new and improved" version
I am a big fan of the M12 line of tools. I'm a professional remodeler and I converted over to the M12 Milwaukee line a number of years ago. They are quality tools with lots of power and I've added most of the M12 line to my workbag. When I first picked up the hackzall a few years ago I wasn't too impressed at first thinking it would be too light weight but soon found it to an indispensable go to tool. I've used it for just about everything. It quite powerful for its size, easy to control with one handed operation and gets into tight places where a full sized sawzall won't fit.

I've actually burned through two of the model #2420-20 M12 (non-"fuel" model). First one died from too much sheetrock dust clogging it up over time. I found I couldn't be without it so I picked a recon bare tool as a replacement last year. I looked into getting it repaired, but the cost was more than the CPO recon price. I managed to kill off the second one just the other day under a sink cutting off a failed solder joint. It got flooded when I cut through the pipe. Needless to say I was considerably unhappy, but to be fair I was pretty rough (although not abusive) on both of them and I got a lot of use out of them. Cost of doing business I guess. Wish Milwaukee would

After killing off 2 hackzalls it would be time to call it quits and look for a better option. Thought about it, but the darn thing is just too useful and convenient to be without. I opted for the more expensive #2520-21XC "fuel" model. Mfg. states that its more powerful, built to last six times longer with better seals (the Achilles' Heal of #2420-20 M12).Its supposed to be waterproof too. It is a bit beefier, heavier and does have more power. Been using it for a couple of weeks now. Love it. I'll find out if it really last six times longer and let you know.
March 3, 2016
Yes, I would recommend this to a friend
my little friend
Use in HVAC installations for those tight cuts. Its got the power to cut clean and fast.
February 20, 2015
Yes, I would recommend this to a friend
Blade that slew glaurung
Makes you never want to pick up a full sized sawzall again with the power this smaller option has to offer you will be impressed at it's performance.
1" EMT
Electrician who installs 1" EMT all day. And 1 battery lasts all day
September 5, 2015
Yes, I would recommend this to a friend
Great Tool
I bought this saw replacing the same M12 style saw, but my old one was not a fuel. I do own some other M12 Fuel tools, and they are great, they out perform the other ones by far. The only thing I don't like is they stop sometimes in the middle of use. I kind of think something to protect the tool, it is a little irritating but not to bad. All in all I love this tool.
September 7, 2015
Yes, I would recommend this to a friend
Great start
Great buy with bonus battery.
April 16, 2016
Yes, I would recommend this to a friend
Little Giant
This saw has a 18 Volt's power, lightweith and the compact size make it easy to use
October 13, 2015
Yes, I would recommend this to a friend
As soon as I received it I put it to use and it works great!
Very useful tool. Lightweight and easy to handle.
March 9, 2016

Questions & Answers

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Browse 2 questions Browse 2 questions and 6 answers
How much does the saw weigh? Is it the same size as the 18v version?
Giff on Feb 22, 2016
BEST ANSWER: It is pretty light weight it I think around 3lbs without the battery 4 with the 4.0hr extended battery. It's noticeably smaller than the m18 version. I also chose this one after reading nasty reviews of the m18 version and I've become a bit of a fuel brushless odor snob as the m18 does not have brushless. It about 11inches tool only and the motor housing is smaller for fitting in tighter spaces. This was not a replacement for big demo projects requiring a full size sawzall but it has very successfully cut through wood and screws as well as pvc and conduit.
I would highly recommend this if you have smaller cutting project or working in tighter spaces like between floor joists, studs, or under cabinets as its compact and easily controllable with one hand.
Sent from iPhone.
Do you deliver in australia or can you help me to order going to australia?
Oliver on May 24, 2014
BEST ANSWER: Currently we do not ship to Australia.

New Vs. Reconditioned

What's the difference between New and Factory-Reconditioned?

Factory-Reconditioned products have been returned to the manufacturer and are restored to like-new operating condition; they go through a rigorous testing and inspection process. Plus, they offer a significant savings vs. new.
  • Reconditioned products may have minor cosmetic blemishes or scratches that do not affect item performance.
  • Reconditioned products may not come with all of the consumables the new version comes with (bits, sanding pads/papers, cases, etc.).
  • Both come with a manufacturer warranty and are covered by our Money Back Guarantee; New is 30 days, Reconditioned is 60 days.
Condition: New Factory Reconditioned
Features: Same Same
Specs: Same Same
Includes: M12 FUEL Hackzall Reciprocating Saw - 2520-21XC,
M12 REDLITHIUM XC 4.0 Ah Extended Capacity Battery Pack - 48-11-2440,
M12 Lithium-Ion Battery Charger - 48-59-2401,
Contractor Bag,
Multi-Material Blade
M12 FUEL Hackzall Reciprocating Saw - 2520-81XC,
M12 REDLITHIUM XC 4.0 Ah Extended Capacity Battery Pack - 48-11-2440,
M12 Lithium-Ion Battery Charger - 48-59-2401,
Contractor Bag,
Multi-Material Blade
Availability: In Stock In Stock
Warranty: 5 Year Limited 1 Year Limited
Price: $169.00 $159.00
You Save: N/A $10.00 (6%)


The Milwaukee Warranty Every MILWAUKEE power tool is tested before leaving the factory and is warranted to be free from defects in material and workmanship. MILWAUKEE will repair or replace (at MILWAUKEE's discretion), without charge, any tool (including battery chargers) which examination proves to be defective in material or workmanship from five (5) years after the date of purchase. Return the tool and a copy of the purchase receipt or other proof of purchase to a MILWAUKEE factory Service/Sales Support Branch location or MILWAUKEE Authorized Service Station, freight prepaid and insured. This warranty does not cover damage from repairs made or attempted by other than MILWAUKEE authorized personnel, abuse, normal wear and tear, lack of maintenance, or accidents.

The warranty period for V28, M12 and M18 Li-Ion Battery Packs is two (2) years from the date of purchase. XC M18 Battery packs carry a (3) year warranty. The warranty period for Ni-Cd Battery Packs, Flashlights, Radios, and Professional Hoists (lever, chain, and electric) is one (1) year from the date of purchase.

*The warranty period for Portable Generators is two (2) years from the date of purchase.



This warranty gives you specific legal rights. You may also have other rights that vary from state to state and province to province. In those states that do not allow the exclusion of implied warranties or limitation of incidental or consequential damages, the above limitations or exclusions may not apply to you. This warranty applies to the United States, Canada, and Mexico only.

Please call Milwaukee Electric Tool Corporation for warranty questions at 800-729-3878