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Milwaukee 2420-20 M12 12V Li-Ion HACKZALL Cordless Reciprocating Saw (Tool-Only)

TLDR Review: Milwaukee M12 HACKZALL Saw

By ShopSavvy Team

Published: May 24th, 2026

Pros

•Compact and lightweight at just 4.2 lbs, making it easy to handle for quick cuts
•Performs effectively and reliably on various materials, according to user reviews
•Ergonomic design provides comfortable handling over extended use
•Versatile for small to medium tasks requiring precision and maneuverability
•Suitable for DIYers and professionals alike due to its solid performance
•Good value for the price, delivering quality in a toonly package
•Capable of producing clean, precise cuts with minimal effort
•Compatible with different blades, allowing some customization for specific tasks
•Demonstrates high brand quality typical of Milwaukee tools
•Easy to control, with a balanced construction that enhances safety

Cons

•Produces more vibration than some users expected, which could lead to fatigue
•Lacks advanced features found in larger or more expensive reciprocating saws
•Slightly basic compared to more featurich models, according to some reviews
•Build quality is adequate but some users feel it could be more durable
•The design is functional but not particularly aesthetic or innovative
•Limited to toonly, so you need to have compatible batteries and chargers separately
•Not ideal for heavuty or prolonged commercial use
•Some users mention that performance might vary depending on blade choice and material
•May not be the best option if you need a major power boost or longer runtime

Bottom Line

If you're after a reliable, easy-to-use, cordless reciprocating saw for small to medium projects, the Milwaukee 2420-20 offers solid performance and good value in a compact package. It's perfect for quick cuts and light to moderate tasks but falls short if you need heavy-duty power or advanced features. If you're considering more power or longer runtime, you might want to explore related models that include more features. Otherwise, this tool's quality and ease of handling make it a smart choice for most DIYers and pros on the go.

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 2 retailers to give you the short version.

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