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Ryobi P506 One+ Lithium Ion 18V 5 1/ vs SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm

Updated July 2026 — SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm leads on price and power.

The SKILSAW SPT77W-01 offers superior power and versatility, making it the better choice for professional use, while the Ryobi P506 is ideal for casual users.

Why Ryobi P506 One+ Lithium Ion 18V 5 1/ is better

Price

Ryobi is significantly cheaper at $69.00.

Portability

Ryobi is cordless, enhancing mobility.

Weight

Ryobi is lighter and easier to handle.

Why SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm is better

Power

SKILSAW has a powerful 15-amp motor.

Blade Size

SKILSAW features a larger 7-1/4 inch blade.

Versatility

SKILSAW offers a 51-degree bevel for complex cuts.

Overall score

Ryobi P506 One+ Lithium Ion 18V 5 1/
65
SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm
85

Specifications

SpecRyobi P506 One+ Lithium Ion 18V 5 1/SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm
MotorBattery15-Amp
Max RPM4700Not Specified
Laser GuideYesNo
Corded/CordlessCordlessCorded
Warranty3 yearsNot Specified

Dimension comparison

Ryobi P506 One+ Lithium Ion 18V 5 1/SKILSAW SPT77W-01 15-Amp 7-1/4-Inch Aluminum Worm

Overview of the Ryobi P506 and SKILSAW SPT77W-01

The Ryobi P506 is priced at $69.00, while the SKILSAW SPT77W-01 is significantly higher at $181.28, making it about 162% more expensive. This price difference highlights a fundamental disparity between these two circular saws, which cater to different user needs and preferences. The Ryobi P506 is a cordless model, offering the convenience of portability, while the SKILSAW SPT77W-01 features a powerful 15-amp motor, aiming for more heavy-duty applications.

Power and Performance

In terms of power, the SKILSAW SPT77W-01 stands out with its 15-amp motor, which is designed for durability and performance on job sites. This motor enhances the saw's ability to handle tough cuts, making it suitable for professional use. Conversely, the Ryobi P506 has a maximum speed of 4,700 revolutions per minute, which is sufficient for lighter tasks but may struggle with more demanding applications. This indicates that while the Ryobi is adequate for home projects, the SKILSAW is tailored for professional-grade performance.

Blade Size and Cutting Capacity

The Ryobi P506 features a 5-1/2 inch blade, providing a depth of cut of 1-9/16 inches. This size is suitable for general cutting tasks but may not meet the needs of users requiring deeper cuts. On the other hand, the SKILSAW SPT77W-01 comes with a larger 7-1/4 inch blade, allowing for greater cutting depth and versatility, particularly when tackling thicker materials. The larger blade size of the SKILSAW enhances its capability to perform a wider variety of cuts, making it a preferred choice for more demanding woodworking tasks.

Portability and Convenience

Portability is a key advantage of the Ryobi P506, as it is a cordless circular saw. It operates on the RYOBI 18-Volt ONE+ System batteries, allowing for mobility without the hassle of cords. This feature is particularly beneficial for users who need to move around job sites or work in areas without easy access to power outlets. In contrast, the SKILSAW SPT77W-01 is corded, which may limit its portability but ensures consistent power during operation. The trade-off here is between the convenience of cordless use and the unlimited power supply of a corded model.

User Comfort and Ergonomics

For user comfort, the Ryobi P506 incorporates GRIPZONE overmold, ensuring optimal grip and comfort during use. This ergonomic design can reduce fatigue during extended cutting sessions. The SKILSAW SPT77W-01, weighing 14.2 lbs without the blade and cord, also emphasizes lightweight construction but might still feel heavier compared to the Ryobi. Both saws are designed with user comfort in mind, but the Ryobi's additional focus on grip may provide a slight edge for casual users or DIY enthusiasts.

Application and Versatility

The SKILSAW SPT77W-01 excels in versatility with its 51-degree bevel capability, allowing users to execute a variety of cuts, including complex angles. This feature is particularly advantageous for professionals who require precise cuts in multiple directions. The Ryobi P506 can make angled cuts up to 50 degrees, making it versatile for general home projects but perhaps not as precise or adaptable as the SKILSAW in professional settings.

Safety Features

Safety features vary between the two models, with the SKILSAW SPT77W-01 including an integrated saw hook for safe rafter placement, enhancing its usability on job sites. The Ryobi P506 does not specifically mention additional safety features, focusing instead on its integrated laser guide for enhanced cutting accuracy. While both tools are designed with safety in mind, the SKILSAW's added features may provide extra assurance for more demanding tasks.

Which should you buy?

Choosing between the Ryobi P506 and SKILSAW SPT77W-01 ultimately depends on your specific needs. If you're looking for an affordable, lightweight, and portable saw for general home projects, the Ryobi P506 at $69.00 is a compelling choice. However, if you require a powerful, durable saw for professional-grade tasks and are willing to invest more, the SKILSAW SPT77W-01, priced at $181.28, offers superior performance and versatility. The decision should align with your intended use, budget, and preference for portability versus power.