Milwaukee 2719-20 M18 FUEL Hackzall vs Milwaukee 2420-21 12-Volt Hackzall Saw: Spec Comparison
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The Milwaukee 2719 20 M18 FUEL Hackzall vs 2420 21 12 Volt Hackzall Saw comparison highlights two distinct one-handed reciprocating saws. Both tools offer pivoting shoes for smoother cuts and variable speed triggers for control. The primary difference lies in their power systems. The 2719-20 uses the M18 platform with a brushless motor for higher performance. The 2420-21 relies on the 12V system and includes a battery and charger in the kit.
Key differences
| Aspect | Milwaukee M18 FUEL One-Handed Hackzall | Milwaukee 12V Hackzall Saw Kit |
|---|---|---|
| Power Source | M18 | 12V |
| Motor Type | Brushless | Not listed |
| Stroke Length | 7/8 in. | 1/2 in. |
| Tool Weight | 3.97 pounds | 2.62 pounds |
| Battery Included | Bare tool | Kit with battery and charger |
Which one should you choose?
Choose Milwaukee M18 FUEL One-Handed Hackzall if
- You need more cutting power and speed for tough applications.
- You already own M18 batteries and want a bare tool.
- You prefer a longer stroke length for faster material removal.
Choose Milwaukee 12V Hackzall Saw Kit if
- You want a complete kit ready to use right out of the box.
- You prioritize a lighter tool for extended overhead or one-handed use.
- You work with 12V batteries and want a more compact saw.
Verdict: Choose the 2719-20 if you require maximum cutting performance and already have M18 batteries. The 2420-21 is the better choice if you need a lightweight, complete kit for lighter duty tasks. Both tools offer the same one-handed convenience and pivoting shoe design.
Power Source and Kit Inclusions
Voltage and Power Source
The Milwaukee 2719-20 M18 FUEL Hackzall operates on the M18 platform, providing a higher voltage system designed for more demanding tasks. Its POWERSTATE brushless motor delivers increased cutting speed and power through tough applications. In contrast, the Milwaukee 2420-21 12-Volt Hackzall Saw uses a 12V power source. This lower voltage system is lighter and often sufficient for lighter duty work. The 12V model features a speed range of 0-3,000 SPM, while the M18 version relies on its brushless motor for sustained performance. You choose based on whether you need maximum cutting power or a lighter, more compact option for general use.
Motor Type
Motor construction significantly impacts tool longevity and efficiency. The Milwaukee 2719-20 M18 FUEL Hackzall is equipped with a POWERSTATE brushless motor. This design offers improved efficiency and can provide up to 3x longer tool life compared to competitive one-handed reciprocating saws. The REDLINK Plus Intelligence system optimizes performance and provides overload protection. The Milwaukee 2420-21 12-Volt Hackzall Saw specifications do not explicitly list the motor type as brushless or brushed in the provided data. However, it includes a variable speed trigger for control. If you prioritize extended tool life and advanced electronics, the M18 FUEL model has a clear advantage.
Stroke Length and Cutting Speed
Stroke length determines how much material is removed per stroke. The Milwaukee 2719-20 M18 FUEL Hackzall features a 7/8-inch stroke length. This longer stroke removes more material with each pass, resulting in faster cuts, especially in thicker or tougher materials. The Milwaukee 2420-21 12-Volt Hackzall Saw has a shorter 1/2-inch stroke length. While it offers a variable speed trigger with a maximum of 0-3,000 SPM, the shorter stroke means less material removal per cycle. For heavy-duty cutting where speed matters, the M18 model is superior. For precision or lighter materials, the 12V model remains effective.
Included Tools and Battery
What comes in the box affects your immediate usability. The Milwaukee 2420-21 12-Volt Hackzall Saw is sold as a kit. It includes the tool, a 12V LITHIUM-ION battery, a 30-minute charger, a Hackzall blade, and a carrying case. This makes it ready to use right out of the box. The Milwaukee 2719-20 M18 FUEL Hackzall is listed as a bare tool. It does not include a battery or charger. If you already own M18 batteries, this is convenient. If you need a complete package, the 12V kit offers everything you need for immediate operation without additional purchases.
Weight and Portability
Weight influences fatigue during extended use. The Milwaukee 2719-20 M18 FUEL Hackzall weighs 3.97 pounds. This is heavier due to the larger M18 motor and internal components. The Milwaukee 2420-21 12-Volt Hackzall Saw weighs only 2.62 pounds. This significant weight difference makes the 12V model much easier to handle for overhead work or prolonged periods. Both tools feature a one-handed design and a pivoting shoe for constant contact and smoother cuts. However, if you value a lighter tool that reduces hand strain, the 12V model is the better choice for you.
Which Milwaukee Hackzall suits your needs
Professionals needing maximum cutting power
The M18 FUEL model features a brushless motor and 7/8-inch stroke length. This combination removes more material per stroke for faster cuts. The pivoting shoe ensures constant contact with the workpiece. You get superior control and versatility in tough applications, making it ideal for demanding daily tasks.
Users wanting a complete ready-to-use kit
This 12-Volt kit includes a battery, charger, and carrying case. It is lighter at 2.62 pounds, reducing fatigue during extended use. The variable speed trigger offers precise control. You receive a complete solution out of the box, eliminating the need to purchase separate power sources or accessories for immediate operation.
Those prioritizing lightweight one-handed operation
Weighing only 2.62 pounds, this 12-Volt tool is significantly lighter than the M18 version. Its compact design enhances maneuverability in tight spaces. The 1/2-inch stroke length is sufficient for lighter cutting duties. You benefit from reduced hand strain and improved handling when performing quick cuts or detailed work.
The products compared
Milwaukee M18 FUEL One-Handed Hackzall
Best for: users with existing M18 batteries needing high power
- Power Source
- M18
- Stroke Length
- 7/8 in.
- Motor Type
- Brushless
- Battery Included
- Bare Tool
- Tool Weight
- 3.97 pounds
- Tool Length
- 14.8 inches
View on Amazon: Milwaukee M18 FUEL One-Handed Hackzall Affiliate link
This is a bare-tool reciprocating saw powered by the M18 battery system. It features a brushless motor and a 7/8-inch stroke length for fast material removal. The tool weighs 3.97 pounds and measures 14.8 inches long. Its pivoting shoe helps reduce vibration during use. You should choose this kit if you already own M18 batteries and need high cutting power for tough applications.
Pros
- POWERSTATE brushless motor for increased cutting speed
- 7/8-inch stroke length removes more material per stroke
- Pivoting shoe provides constant contact and smoother cuts
- REDLINK Plus Intelligence prevents overload damage
- One-handed design offers superior control
Cons
- Sold as a bare tool without a battery
- Heavier at 3.97 pounds compared to compact 12-volt models
- Longer 14.8-inch body may be bulky for tight spaces
Good fit if
- You already have a collection of M18 batteries
- You need maximum cutting speed for thick materials
- You prefer a one-handed reciprocating saw design
Skip if
- You want a complete kit with a battery included
- You need a lighter tool for overhead work
- You require a compact 12-volt system for portability
Verdict: Milwaukee M18 FUEL Hackzall delivers high power and speed for users who already own M18 batteries. It is ideal for demanding cutting tasks where stroke length and motor efficiency matter most.
Milwaukee 12V Hackzall Saw Kit
Best for: Light duty cutting and tight spaces
- Power Source
- 12V
- Stroke Length
- 1/2 in.
- Strokes Per Minute
- 0-3,000 SPM
- Battery Included
- Kit with battery and charger
- Battery Capacity
- 12V LITHIUM-ION
- Tool Weight
- 2.62 lbs.
View on Amazon: Milwaukee 12V Hackzall Saw Kit Affiliate link
The Milwaukee 2420-21 is a 12-volt reciprocating saw kit. It delivers 0-3,000 SPM with a 1/2-inch stroke length. The tool weighs 2.62 lbs. The kit includes a battery, charger, blade, and case. This compact setup suits you for tight spaces. It offers variable speed control for precise cuts. You get a complete package ready for light duty work.
Pros
- 12V power source for portability
- 0-3,000 SPM speed range
- Includes battery and charger
- QUIK-LOK blade clamp system
Cons
- Lower voltage than 18V competitors
- Heavier than bare tool versions
- Shorter stroke length than heavy duty models
Good fit if
- You need a compact saw for tight spaces
- You want a complete kit with battery
- You prefer lighter weight tools
Skip if
- You require maximum cutting power
- You already own 12V batteries
- You need heavy duty demolition capability
Verdict: Milwaukee 12V Hackzall Saw Kit fits you if you prioritize portability and convenience over raw power. It is ideal for homeowners doing light renovation work.
Specifications side by side
| Spec | Milwaukee M18 FUEL One-Handed Hackzall | Milwaukee 12V Hackzall Saw Kit |
|---|---|---|
| Power Source | M18 | 12V |
| Stroke Length | 7/8 in. | 1/2 in. |
| Strokes Per Minute | not stated | 0-3,000 SPM |
| Motor Type | Brushless | not stated |
| Battery Included | Bare Tool | Kit with battery and charger |
| Battery Capacity | not stated | 12V LITHIUM-ION |
| Tool Weight | 3.97 pounds | 2.62 lbs. |
| Tool Length | 14.8 inches | not stated |
| Blade Clamp | not stated | QUIK-LOK Universal 1/2 in. Tang |
| Variable Speed Trigger | not stated | Variable speed |
| Voltage | not stated | 12V Max |
| Dimensions | 14.8 × 4.4 × 6.8 inches | 7.2 × 4.76 × 15.4 inches |
| Weight | 3.97 pounds | 2.62 pounds |
| Size | Large | 15.60 L x 7.70 W x 3.95 H |
| Color | Red, Black | Red/Black |
| Model | 2719-20 | 2420-21 |
Frequently asked questions
Is the Milwaukee 2719-20 M18 FUEL Hackzall heavier than the 2420-21 12-Volt model?
Yes, the M18 FUEL model is heavier. It weighs 3.97 pounds, while the 12-Volt 2420-21 weighs 2.62 pounds. The difference in mass comes from the larger battery platform and motor design. You may notice this weight during extended overhead use or in tight spaces where tool balance matters.
Does the Milwaukee 2719-20 come with a battery included?
No, the Milwaukee 2719-20 is sold as a bare tool. It does not include a battery or charger. You must already own compatible M18 batteries to operate this saw. This design allows you to use existing power sources from your current Milwaukee tool collection without purchasing additional hardware.
Which Hackzall is more compact for tight spaces?
The 2420-21 12-Volt model is more compact. It measures 7.2 inches in length and weighs just 2.62 pounds. The M18 FUEL 2719-20 is longer at 14.8 inches and weighs 3.97 pounds. The smaller footprint of the 12-Volt unit makes it easier to maneuver in confined areas.
Can I use the 2420-21 12-Volt Hackzall for heavy-duty cutting?
The 2420-21 is best suited for light-duty tasks. It operates on a 12V Max platform designed for portability and convenience. While it handles renovation work well, it lacks the raw power of the M18 FUEL system. You should choose the 2719-20 for demanding cutting jobs that require higher torque.
What is the size difference between the two Milwaukee Hackzall models?
The M18 FUEL 2719-20 is classified as a Large size tool. It measures 14.8 inches in length, 4.4 inches in width, and 6.8 inches in height. The 12-Volt 2420-21 is smaller, measuring 15.4 inches in height, 4.76 inches in width, and 7.2 inches in length. Dimensions vary by orientation, but the M18 model is generally bulkier.
Is the Milwaukee 2719-20 suitable for users with existing M18 batteries?
Yes, it is ideal for those users. The tool operates on the M18 platform, allowing you to use your existing battery inventory. This compatibility saves you from buying new power sources. It delivers high power and speed, making it a practical choice if you already invest in the M18 ecosystem.