SHALL 7.5Amp 4-1/ vs DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder
Updated July 2026 — SHALL 7.5Amp 4-1/ wins on sales rank and rpm, DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder wins on price and power.
The SHALL grinder offers a more affordable option with higher RPM and additional accessories, while the DEWALT grinder is more expensive but has a better brand reputation.
Why SHALL 7.5Amp 4-1/ is better
Price
SHALL grinder is $32.99 compared to DEWALT's $127.99
Power
SHALL grinder has a no-load speed of 12000 RPM vs DEWALT's 8000 RPM
Accessories
SHALL grinder includes multiple accessories, DEWALT is tool-only
Why DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder is better
Brand
DEWALT is known for high-quality tools
Sales Rank
DEWALT has a better sales rank of 10196
Convenience
DEWALT features tool-free wheel release for easy changes
Overall score
Specifications
| Spec | SHALL 7.5Amp 4-1/ | DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder |
|---|---|---|
| Motor | 7.5 Amps | 20V MAX |
| Trigger | Slide Switch | 2-Finger Trigger |
| Guard | Tool-Free | Tool-Free |
| Handle | 2-Position | 2-Position |
| Included | Accessories | Tool Only |
Dimension comparison
Price Comparison
The 7.5Amp 4-1/2 Inch 12000 RPM Angle Grinder is priced at $32.99, while the DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder is significantly higher at $127.99. This makes the SHALL grinder about 74% cheaper than the DEWALT model. For budget-conscious buyers or those who are seeking a basic grinder for occasional use, the SHALL grinder presents a compelling value. However, the price difference may reflect varying features and performance levels, which should be considered in the overall evaluation.
Power and Performance
In terms of power, the SHALL grinder boasts a 7.5 Amps motor that produces a no-load speed of 12000 RPM. This provides fast cutting and grinding capabilities, making it suitable for various applications. On the other hand, the DEWALT grinder operates at a lower speed of 8,000 RPM, which may limit its effectiveness in more demanding tasks. The higher RPM of the SHALL grinder could be a significant advantage for users who require quick results in cutting and grinding.
Design and Ergonomics
The ergonomic design of the SHALL grinder includes a non-slip handle and an ergonomic 2-position side handle for added control and comfort. Weighing only 3.7 pounds, it is compact and lightweight, making it easy to use for extended periods without fatigue. Conversely, the DEWALT grinder also features a 2-position side handle, but its design focuses more on convenience with a 2-finger trigger switch and a lock-off button for easy activation. While both grinders are designed for comfort, the SHALL grinder's lighter weight and additional ergonomic features may provide a more user-friendly experience.
Safety Features
Safety is a crucial consideration when using power tools, and both grinders offer several safety features. The SHALL grinder comes with two different types of tool-free wheel guards designed to protect users during operation. It also has a slide switch with a lock-off/on feature for safe operation. In comparison, the DEWALT grinder features a tool-free guard that allows for quick adjustments and a lock-off button on its trigger switch. While both models prioritize user safety, the SHALL grinder offers multiple guards, which could be beneficial for users who frequently switch between tasks and need enhanced protection.
Accessories and Components
The SHALL grinder includes a generous package of components: it comes with two wheel guards, three cutting wheels, three flap discs, a side handle, and two carbon brushes for extended motor life. This comprehensive set ensures that users have the necessary tools to get started right away. The DEWALT grinder, marketed as a tool-only option, does not come with additional accessories, which means purchasers may need to invest extra to equip themselves fully. This may be a consideration for those looking for a complete package without additional costs.
Versatility and Applications
Both grinders are designed for versatility, catering to users who need tools for cutting, sharpening, and surface preparation. The SHALL grinder's efficient vent system and dust ejection capabilities enhance its functionality for metal and wood applications. Meanwhile, the DEWALT grinder is touted for its ability to handle cutting and grinding tasks efficiently, especially with its Quick-Change wheel release feature, which facilitates tool-free wheel changes. While both models can effectively handle a variety of jobs, the SHALL grinder's additional features may make it more adaptable for different materials and conditions.
Brand Reputation and Sales Rank
Brand reputation can significantly influence purchasing decisions, and both SHALL and DEWALT have established themselves in the market. The SHALL grinder has a sales rank of 20,568, while the DEWALT grinder is better positioned with a sales rank of 10,196, indicating its popularity among consumers. DEWALT is known for its high-quality tools, which often command a premium price. While the SHALL grinder offers great value, the DEWALT brand may appeal to those looking for a tool that aligns with professional standards and reliability.
Which should you buy?
Ultimately, the decision between the SHALL grinder and the DEWALT grinder depends on your specific needs and budget. The SHALL grinder is a strong contender for those seeking an affordable and powerful option with a comprehensive accessory set. Its higher speed and lightweight design make it suitable for a variety of tasks. On the other hand, the DEWALT grinder, while significantly more expensive, offers features that may appeal to professional users or those who prioritize brand reputation and a more robust design. Consider your intended use, budget, and brand loyalty when making your choice.

