Milwaukee 2420-20 M12 12-Volt Lithium-Ion Review: Who It Fits and Who Should Skip It
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
This milwaukee 2420 20 m12 12 volt lithium ion review focuses on the tool-only reciprocating saw. It is a compact, 12-volt cordless unit designed for tight spaces. The defining specs are its 2.14-pound weight and 10-inch length. These dimensions make it easy to maneuver in confined areas where larger saws cannot fit. The tool accepts both HACKZALL and SAWZALL style blades, offering versatility for various cutting tasks. A variable-speed trigger allows for controlled cuts, while a battery fuel gauge displays remaining run time. This combination of size and power source defines its practical utility for specific jobs.
What stands out
- Accepts both HACKZALL and SAWZALL style blades
- Variable-speed trigger allows for a controlled cut
- Battery fuel gauge displays the remaining run time
- Tool Weight is 2.14 pounds for reduced fatigue
- Tool Length is 10 inches for compact maneuverability
Who it fits
Good fit for
This saw suits professionals who frequently work in tight spaces, such as plumbing or electrical installations. The 12-volt power source integrates with existing M12 battery systems, making it ideal for users already invested in Milwaukee's ecosystem. Its lightweight 2.14-pound design reduces hand fatigue during prolonged use. The ability to use both HACKZALL and SAWZALL blades means you can handle diverse materials without switching tools. If you need a portable, controlled cutting option for detailed work, this tool fits your workflow.
Who should skip it
You should look elsewhere if you require a full kit with batteries and a charger, as this listing includes the tool only. Heavy-duty demolition work may exceed the capabilities of a 12-volt motor, especially for thick metal or large diameter pipes. Users needing continuous, high-power cutting for extended periods might find the battery life insufficient without frequent swaps. If you prefer a larger, more powerful saw for rough framing or heavy construction, this compact unit is not the right choice for your primary needs.
Verdict: The Milwaukee M12 Hackzall is a specialized tool for tight spaces and users already in the M12 system. It offers versatility and control but requires separate battery purchases. Choose it for detailed work, not heavy demolition.
Key specs explained for this tool
Tool Length: 10 inches
This measurement defines the overall size of the reciprocating saw. A 10-inch length keeps the unit compact for tight spaces. You can slide it into crowded areas where larger tools fail. It offers better control than standard 12-inch models. Check this dimension if you often work in confined cabinets or narrow wall cavities.
Tool Weight: 2.14 pounds
The tool weighs just over two pounds. This light weight reduces fatigue during overhead cuts or extended use. You can hold it steady for longer periods without arm strain. Compare this to heavier 18-volt saws that may weigh three pounds or more. Choose this spec if you prioritize maneuverability over raw power.
Power Source: 12-Volt
This tool runs on Milwaukee M12 batteries. It offers portability without a cord. The 12-volt system suits light to medium duty tasks. It may lack the torque for thick metal or dense wood. Use this spec to determine if your existing battery inventory matches. It fits users who already own the M12 ecosystem.
Variable-speed trigger
The trigger lets you adjust cutting speed. You can start cuts slowly for precision or speed up for rough material. This control prevents binding in delicate work. It allows you to match the pace to the material density. Compare this to fixed-speed models that offer less flexibility. It is essential for detailed demolition or fine adjustments.
Design and build specs
The Milwaukee 2420-20 M12 Hackzall is a tool-only reciprocating saw. According to the listing, it features a red finish on its body. The overall dimensions are 10 inches in length, 6 inches in width, and 2.25 inches in height. This compact form factor is engineered for maneuverability. You can slide the unit into tight spaces where larger saws cannot fit. The small footprint allows for precise positioning in crowded work areas.
Weight is listed at 2.14 pounds. This light mass reduces fatigue during extended use. It makes the tool easier to hold and control when cutting overhead or in awkward angles. The power source is a 12-volt lithium-ion battery. The listing notes it accepts both HACKZALL and SAWZALL style blades. This compatibility gives you flexibility in blade selection for different materials.
Controls include a variable-speed trigger. This feature allows you to adjust the cutting speed for better control. A battery fuel gauge displays the remaining run time. This helps you plan your work without guessing charge levels. The layout keeps the tool simple and functional. There are no complex digital displays or additional buttons. The design prioritizes ease of use in confined spaces.
Setup and everyday use guide
Setting up this Milwaukee M12 Hackzall is straightforward because it is a bare tool. You must provide your own compatible M12 battery. The listing confirms that no battery is included. Once you attach a charged 12-volt battery, the tool is ready for work. The design accepts both HACKZALL and SAWZALL style blades. This flexibility allows you to use standard reciprocating saw blades for various cutting tasks. You do not need special proprietary inserts for blade changes. The tool weighs 2.14 pounds. This light weight reduces fatigue during extended use. You can hold it with one hand or two, depending on the resistance of the material. The variable-speed trigger gives you control. You can start cuts slowly to establish a groove or increase speed for faster material removal. This feature helps you maintain precision in tight spaces. The battery fuel gauge is a practical addition. It displays the remaining run time on the battery itself. You can check your power level without guessing. This feature helps you plan your work cycle. The 10-inch length keeps the unit compact. You can maneuver it into crowded areas where larger tools fail. The red finish is standard for the brand. It does not affect performance but helps with visibility. Daily use involves selecting the appropriate blade and battery. You insert the blade, attach the battery, and begin cutting. The variable trigger allows for controlled operation. You adjust the speed as needed for the material. The compact size and light weight make it suitable for detailed work. You can use it for plumbing, electrical, or general demolition tasks. The fuel gauge ensures you know when to swap batteries. This setup supports efficient workflow in various environments.
Before You Buy This Tool
Before you buy, confirm your M12 battery compatibility. This Milwaukee M12 Hackzall is a bare tool, so it does not include a battery or charger. You must supply your own compatible 12-volt Lithium-Ion power source. Check that your existing batteries fit the tool’s connector. Also, verify blade compatibility. The saw accepts both HACKZALL and SAWZALL style blades, giving you flexibility for different materials. Keep spare blades on hand, as reciprocating saws consume them quickly. Regularly clean the blade clamp to ensure secure attachment. This compact unit fits well in tight spaces but lacks the power of larger 18-volt models. It suits users who already own the M12 ecosystem. If you need a standalone heavy-duty saw, consider a higher-voltage option. This tool is best for light duty tasks and existing Milwaukee users.
Check before you buy
- Confirm your M12 batteries fit this bare tool.
- Buy compatible HACKZALL or SAWZALL blades separately.
- Check if you need a charger for new batteries.
- Ensure it fits your tight workspace needs.
The product at a glance
Milwaukee M12 12V Hackzall Tool
Best for: M12 battery owners needing a lightweight recip saw
- Power Source
- 12-Volt
- Tool Weight
- 2.14 pounds
- Tool Length
- 10 inches
- Variable Speed Trigger
- Variable-speed trigger
- Voltage
- 12V Max
- Included Tools
- Reciprocating Saw
View on Amazon: Milwaukee M12 12V Hackzall Tool Affiliate link
This is the Milwaukee 2420-20 M12 12-Volt Lithium-Ion HACKZALL cordless reciprocating saw. It weighs 2.14 pounds and measures 10 inches in length. The tool accepts both HACKZALL and SAWZALL style blades. A variable-speed trigger gives you controlled cutting power. A battery fuel gauge shows remaining run time. It is a bare tool, so you need a compatible battery. This compact saw suits users who need a lightweight option for tight spaces.
Pros
- Accepts both HACKZALL and SAWZALL style blades
- Variable-speed trigger allows for a controlled cut
- Battery fuel gauge displays the remaining run time
- Lightweight at 2.14 pounds
Cons
- Sold as a bare tool without a battery
- 12-Volt power source limits runtime compared to higher voltage tools
- No included battery charger
Good fit if
- You already own Milwaukee M12 batteries
- You need a lightweight saw for tight spaces
- You want a tool that accepts standard SAWZALL blades
Skip if
- You need a complete kit with battery and charger
- You require high-torque power for heavy-duty cutting
- You prefer a corded tool for unlimited runtime
Verdict: Milwaukee M12 12-Volt Hackzall Reciprocating Saw is a compact, lightweight option for users who already have M12 batteries. It fits those who need a versatile blade system and controlled cutting in tight spaces.
Specifications side by side
| Spec | Milwaukee M12 12V Hackzall Tool |
|---|---|
| Power Source | 12-Volt |
| Tool Weight | 2.14 pounds |
| Tool Length | 10 inches |
| Variable Speed Trigger | Variable-speed trigger |
| Voltage | 12V Max |
| Included Tools | Reciprocating Saw |
| Battery Included | Bare Tool |
| Dimensions | 10 × 6 × 2.25 inches |
| Weight | 2.14 pounds |
| Color | Red |
| Model | MIL2420-20 |
Frequently asked questions
Does the Milwaukee 2420-20 come with a battery?
No, this model is sold as a bare tool. The product data confirms that no battery is included in the package. You must supply your own compatible M12 12-volt Lithium-Ion battery to operate it. This design keeps the initial tool cost lower for existing Milwaukee users.
What is the weight of the M12 Hackzall?
The tool weighs 2.14 pounds. This light weight makes it easy to hold for extended periods without causing fatigue. It reduces the strain on your wrist and arm during overhead cuts or when working in awkward positions for long durations.
How long is the reciprocating saw?
The overall length is 10 inches. This compact size allows you to fit the tool into tight spaces and confined areas. It is ideal for cutting pipes or wood in crowded corners where larger saws cannot reach or maneuver effectively.
Is this tool compatible with M12 batteries?
Yes, it is part of the Milwaukee M12 system. You can use any standard M12 12-volt Lithium-Ion battery with this reciprocating saw. Ensure your battery connector matches the tool’s port for a secure and safe power connection during operation.
What are the dimensions of the tool?
The dimensions are 10 inches in length, 6 inches in width, and 2.25 inches in height. These measurements define its compact footprint. The narrow width and short length allow for better control and access in restricted workspaces compared to full-size models.
What color is the Milwaukee 2420-20?
The tool features a red finish on its body. This color is consistent with the Milwaukee M12 brand identity. The red casing helps you quickly identify the tool among other equipment in your toolbox or on a job site.
Can I use this saw for cutting metal pipes?
Yes, as a reciprocating saw, it is designed for cutting various materials including metal pipes. You just need to select the appropriate blade for the material. The 12-volt power source provides sufficient torque for general plumbing and demolition tasks in tight spaces.