SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw vs SKIL 2x20V PWR CORE 20 Brushless 7-1/4” Rear
Updated July 2026 — SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw wins on cutting depth and motor power, SKIL 2x20V PWR CORE 20 Brushless 7-1/4” Rear wins on price and runtime.
The SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw offers superior cutting capacity and motor performance, making it ideal for heavy-duty tasks, while the SKIL 2x20V PWR CORE 20 Circular Saw excels in portability and runtime.
Why SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw is better
Cutting Capacity
6-1/4 inch cutting capacity vs 2-9/16 inch
Motor Performance
15 AMP Dual-Field motor vs digital brushless motor
Durability
All magnesium construction vs unspecified weight
Why SKIL 2x20V PWR CORE 20 Brushless 7-1/4” Rear is better
Price
$279.00 vs $636.99
Portability
Cordless design vs corded
Battery Life
Up to 600 cuts per charge vs corded power
Overall score
Specifications
| Spec | SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw | SKIL 2x20V PWR CORE 20 Brushless 7-1/4” Rear |
|---|---|---|
| Cutting Capacity | 6-1/4 inch | 2-9/16 inch |
| Motor Type | 15 AMP Dual-Field | Digital Brushless |
| Power Source | Corded | Cordless |
| Battery Life | N/A | Up to 600 cuts |
| Weight | Lightweight | Not specified |
Dimension comparison
Price Comparison
The SKIL 2x20V PWR CORE 20 Brushless 7-1/4” Rear Handle Circular Saw is significantly cheaper than the SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw Circular Saw, costing $279.00 compared to $636.99. This means the circular saw kit is about 56% less expensive, making it a more budget-friendly option for those looking for a powerful circular saw without breaking the bank. While the Worm Drive Skilsaw offers exceptional cutting capacity and professional-grade performance, the price difference is substantial, particularly for casual users or those just starting in woodworking.
Cutting Capacity
When it comes to cutting capacity, the SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw stands out with a remarkable 6-1/4 inch cutting capability. This allows it to handle tough materials, including 6x lumber, in a single pass. In contrast, the SKIL 2x20V PWR CORE 20 Brushless Circular Saw boasts a 2-9/16 inch depth of cut, which is suitable for most framing tasks but falls short compared to the Worm Drive model. If your projects often involve thicker materials, the Worm Drive’s superior cutting capacity may be essential for efficiency.
Motor Performance
The SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw is equipped with a powerful 15 AMP Dual-Field motor, designed to keep the motor cooler while providing relentless power. This feature is particularly beneficial for heavy-duty applications, ensuring extended operation without overheating. On the other hand, the SKIL 2x20V PWR CORE 20 Circular Saw features a digital brushless motor that delivers 5,300 RPM, maximizing power and extending tool life. While both motors are robust, the Worm Drive’s motor is optimized for continuous heavy use, making it ideal for professional contractors.
Portability and Power Source
The SKIL 2x20V PWR CORE 20 Circular Saw offers the advantage of portability, being a cordless model powered by two 5.0Ah lithium-ion batteries. This design allows for greater freedom of movement on job sites without the constraints of a power cord. Moreover, the innovative Dual Port PWR JUMP charger enables quick recharging, getting batteries from 0-25% in just 15 minutes. In contrast, the SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw requires a power outlet, which may limit its use in remote locations. For users prioritizing mobility, the cordless design of the PWR CORE 20 Circular Saw is a significant advantage.
Weight and Durability
The SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw is crafted with an all magnesium construction, making it both lightweight and durable. This design is especially beneficial for professionals who need to transport their tools frequently. The die-cast footplate further ensures accuracy and longevity. Meanwhile, the SKIL 2x20V PWR CORE 20 Circular Saw is also designed for durability, but its weight is not specified. The emphasis on lightweight materials in the Worm Drive model may provide an edge for users who are concerned about tool fatigue during extended use.
Battery Life and Runtime
The SKIL 2x20V PWR CORE 20 Circular Saw offers an impressive runtime, delivering up to 600 cuts per charge based on 2x4 crosscuts in SPF lumber. The technology behind the PWR CORE 20 batteries enhances runtime by 25%, ensuring efficiency during long projects. In comparison, the SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw does not rely on batteries, instead offering consistent power through its corded design. While the Worm Drive model ensures uninterrupted performance, users may appreciate the flexibility and extended use time that the battery-operated option provides.
Safety Features
In terms of safety, the SKIL 2x20V PWR CORE 20 Circular Saw is equipped with an electric brake that enhances jobsite productivity by reducing downtime between cuts. This feature can be particularly useful in fast-paced environments where quick transitions are necessary. The SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw does not mention any specific safety features, focusing more on its cutting capabilities and motor performance. For those who prioritize safety and efficiency during operation, the electric brake in the PWR CORE 20 Circular Saw is a noteworthy addition.
Which should you buy?
Ultimately, the decision between the SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw and the SKIL 2x20V PWR CORE 20 Brushless Circular Saw boils down to your specific needs. If you require a powerful tool for heavy-duty applications, the Worm Drive model's superior cutting capacity and robust motor make it a strong contender, despite its higher price point. Conversely, if you value portability, runtime, and a more budget-friendly option, the PWR CORE 20 Circular Saw is an excellent choice. Each saw excels in different areas, so consider your primary use cases before making a purchase decision.

