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Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion vs PROMAKER 9 Amp Angle Grinder, 4-1/2 in. with

Updated July 2026 — Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion wins on price and weight, PROMAKER 9 Amp Angle Grinder, 4-1/2 in. with wins on rpm and power.

The Milwaukee 2880-20 offers advanced features and cordless convenience, while the PROMAKER 9 Amp Angle Grinder provides excellent value for budget-conscious users.

Why Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion is better

Performance

Milwaukee has a brushless motor for better efficiency.

Safety Features

Includes electronic clutch for kickback protection.

Comfort

Anti-vibration side handle enhances user comfort.

Why PROMAKER 9 Amp Angle Grinder, 4-1/2 in. with is better

Price

Significantly lower cost at $34.99.

Included Accessories

Comes with grinding wheel and flap discs.

Power

9 Amp motor reaches 12,000 RPM.

Overall score

Milwaukee 2880-20 M18 Fuel Brushless Lithium-Ion
85
PROMAKER 9 Amp Angle Grinder, 4-1/2 in. with
70

Specifications

SpecMilwaukee 2880-20 M18 Fuel Brushless Lithium-IonPROMAKER 9 Amp Angle Grinder, 4-1/2 in. with
Motor TypeBrushlessBrushed
Safety FeaturesElectronic ClutchPaddle Switch
Handle TypeAnti-Vibration3-Position
Included AccessoriesNoneYes
Battery CompatibilityM18None

Dimension comparison

Milwaukee 2880-20 M18 Fuel Brushless Lithium-IonPROMAKER 9 Amp Angle Grinder, 4-1/2 in. with

Overview of the Milwaukee 2880-20 and PROMAKER 9 Amp Angle Grinders

The Milwaukee 2880-20 is a high-performance cordless angle grinder, while the PROMAKER 9 Amp Angle Grinder offers a corded option at a significantly lower price. The Milwaukee model is priced at $143.99, making it about 310% more expensive than the PROMAKER, which retails for $34.99. Both grinders are designed for cutting and grinding tasks, but they cater to different user needs and preferences.

Power and Performance Comparison

The PROMAKER 9 Amp Angle Grinder features a powerful 9 Amp motor capable of reaching up to 12,000 RPM, making it highly effective for heavy-duty cutting, grinding, and polishing tasks. In contrast, the Milwaukee 2880-20 does not specify its RPM but emphasizes its brushless motor's efficiency and performance. The Milwaukee's electronic clutch and overload protection enhance its longevity and safety during use. While Milwaukee's advanced features may appeal to professionals, the PROMAKER delivers sufficient power for both DIY enthusiasts and professionals at a lower cost.

Safety Features

Safety is a critical aspect of any power tool, and each grinder offers unique safety features. The Milwaukee 2880-20 includes an electronic clutch for kickback protection and an anti-vibration side handle for increased user comfort and safety. On the other hand, the PROMAKER's innovative paddle switch system ensures that the grinder stops instantly when released, preventing accidental starts and reducing operator fatigue. Both grinders provide essential safeguards, but the choice may depend on whether the user prioritizes advanced features or simplicity.

User Comfort and Ergonomics

In terms of user comfort, the Milwaukee 2880-20 stands out with its anti-vibration side handle, which helps reduce fatigue during extended use. This feature is particularly beneficial for professionals who may spend long hours using the tool. Conversely, the PROMAKER 9 Amp Angle Grinder boasts a 3-position auxiliary handle that can be adjusted for maximum control and balance. While both models prioritize ergonomics, the Milwaukee's anti-vibration technology may be more appealing to heavy users.

Versatility and Accessories

The PROMAKER angle grinder excels in versatility by coming with an accessory kit that includes a grinding wheel, four flap discs, and extra carbon brushes, providing users with everything they need to start working immediately. This kit adds significant value to the PROMAKER, especially for those who are new to using angle grinders. The Milwaukee 2880-20, while compatible with all M18 batteries and common grinding accessories, does not come with additional tools or accessories, which might be a consideration for users seeking a complete package.

Portability and Convenience

When it comes to portability, the Milwaukee 2880-20 shines as a cordless option, offering the freedom to operate without being tethered to an outlet. This feature is particularly advantageous for outdoor projects or locations without easy access to power. In contrast, the PROMAKER 9 Amp Angle Grinder is a corded model, which means it requires an electrical outlet for use. While the corded design can limit mobility, it also ensures consistent power, making it ideal for stationary tasks in a workshop.

Price and Value

The Milwaukee 2880-20 is priced at $143.99, which is substantially higher than the PROMAKER's $34.99. This price difference of about 310% reflects the advanced features and cordless convenience offered by Milwaukee. However, the PROMAKER provides excellent value for its price, making it an attractive option for budget-conscious buyers. Those who require a reliable grinder for less intensive tasks may find the PROMAKER to be a more sensible investment without sacrificing performance.

Which should you buy?

Choosing between the Milwaukee 2880-20 and the PROMAKER 9 Amp Angle Grinder ultimately depends on your specific needs and budget. If you prioritize professional-grade features, portability, and advanced safety mechanisms, the Milwaukee 2880-20 may be worth the investment. However, if you're seeking a cost-effective option that still delivers solid performance with an included accessory kit, the PROMAKER is a compelling choice. For general DIY tasks and casual use, the PROMAKER provides significant value at a fraction of the cost of the Milwaukee model.