PROMAKER 9 Amp Angle Grinder, 4-1/2 in. with vs RhovixStar Brushless Angle Grinder Cordless, 3/
Updated July 2026 — PROMAKER 9 Amp Angle Grinder, 4-1/2 in. with wins on price and power, RhovixStar Brushless Angle Grinder Cordless, 3/ wins on comfort.
The PROMAKER 9 Amp Angle Grinder offers better value and power, while the RhovixStar provides portability and battery efficiency.
Why PROMAKER 9 Amp Angle Grinder, 4-1/2 in. with is better
Price
PROMAKER is $34.99, significantly cheaper than RhovixStar at $65.99.
Power
PROMAKER has a 9 Amp motor with 12,000 RPM.
Accessories
PROMAKER includes a comprehensive accessory kit for immediate use.
Why RhovixStar Brushless Angle Grinder Cordless, 3/ is better
Portability
RhovixStar is cordless, allowing for greater mobility.
Battery Life
RhovixStar includes two battery packs for extended use.
Brushless Motor
RhovixStar's brushless motor offers longer lifespan and efficiency.
Overall score
Specifications
| Spec | PROMAKER 9 Amp Angle Grinder, 4-1/2 in. with | RhovixStar Brushless Angle Grinder Cordless, 3/ |
|---|---|---|
| Motor Type | Electric | Brushless |
| Max RPM | 12000 | 9000 |
| Battery | N/A | 2x 4.0Ah |
| Weight | 5.5 lbs | 4.0 lbs |
| Warranty | 2 Years | 1 Year |
Dimension comparison
Overview of the Products
The PROMAKER 9 Amp Angle Grinder is priced at $34.99, while the RhovixStar Brushless Angle Grinder Cordless comes in at $65.99, making the PROMAKER about 47% cheaper. Both tools cater to serious users, but they offer different features that may appeal to distinct preferences and needs. The PROMAKER focuses on power and versatility, while the RhovixStar emphasizes portability and battery efficiency.
Power and Performance
The PROMAKER features a powerful 9 Amp motor that delivers up to 12,000 RPM, making it well-suited for heavy-duty metal work, cutting, grinding, and polishing. On the other hand, the RhovixStar offers a brushless motor, which provides a longer lifespan and less energy consumption. It supports four adjustable speeds, with a maximum of 9,000 RPM, allowing for versatility in tasks like sanding and polishing. While the PROMAKER excels in raw power, the RhovixStar’s brushless technology is designed for longevity and efficiency.
Design and Ergonomics
When it comes to design, the PROMAKER includes a paddle switch system that prevents accidental starts, enhancing safety during operation. Its three-position auxiliary handle allows for maximum control and comfort, which is crucial for long-term projects. Conversely, the RhovixStar’s ergonomic design caters to both left-handed and right-handed users, reducing wrist fatigue during extended use. While the PROMAKER focuses on safety features, the RhovixStar emphasizes user comfort, making it suitable for varied applications.
Accessories and Included Items
The PROMAKER comes with a comprehensive accessory kit that includes a grinding wheel, four flap discs, and two extra carbon brushes, ensuring users have everything needed to start immediately. In contrast, the RhovixStar provides an extensive kit that features two battery packs, a fast charger, several wheels, and a wrench. While the PROMAKER’s accessories are more focused on immediate use, the RhovixStar’s offering highlights the advantage of battery power and a wider array of cutting and grinding options.
Versatility and Use Cases
The PROMAKER is positioned as a versatile tool ideal for both professionals and DIY enthusiasts, thanks to its high-speed capabilities and adjustable guard. Its robust motor allows for tasks that require significant power, making it suitable for metal work. The RhovixStar, being cordless, stands out in scenarios where mobility is essential. Its compatibility with various blades and discs allows it to tackle a range of tasks from metal polishing to stone carving. Each tool has its strengths, depending on the user's needs for power versus portability.
Pricing and Value
The PROMAKER’s current price of $34.99 not only makes it a more economical choice compared to the RhovixStar at $65.99, but it also offers good value for users looking for a reliable angle grinder without breaking the bank. The RhovixStar, while more expensive, provides additional features such as cordless convenience and a brushless motor, which may justify the higher price for some users. The choice between the two will ultimately depend on whether users prioritize budget or advanced features.
Sales Ranking and Popularity
In terms of sales performance, the PROMAKER ranks at 35,536, while the RhovixStar has a slightly lower rank of 47,285. This suggests that the PROMAKER may be more popular among consumers, possibly due to its affordability and strong feature set. A higher sales rank can indicate greater consumer trust and satisfaction, which is a key consideration for potential buyers evaluating their options.
Which should you buy?
Choosing between the PROMAKER 9 Amp Angle Grinder and the RhovixStar Brushless Angle Grinder Cordless largely depends on your specific needs. If you prioritize power, affordability, and immediate usability with included accessories, the PROMAKER is the clear winner at $34.99. However, if you value portability, battery life, and a brushless motor for longer use, the RhovixStar at $65.99 may be worth the investment. Each product has distinct advantages, so assessing your requirements will guide you to the right choice.

