# Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw vs Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw: specs and price compared

A sourced, side-by-side comparison of the Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw (Ryobi) and Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw (Skilsaw) among circular saws. Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw is the cheaper of the two at $119.

## Side by side

| Spec | Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw | Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw |
| --- | --- | --- |
| US price | $119 | $219.99 |
| Brand | Ryobi | Skilsaw |
| Released | — | 2013 |
| Power source | cordless | corded |
| Blade size (in) | 7-1/4 in | 7-1/4 in |
| Voltage or amps | 18 V | 15 A |
| Max (rpm) | 3800 | 5300 |
| Bevel capacity (°) | 56 deg | 53 deg |
| Brushless | Yes | No |
| Weight (lb) | 6.6 lb | 11.5 lb |

## Key differences

- Power source: Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw cordless vs Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw corded
- Voltage or amps: Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 18 V vs Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw 15 A
- Max (rpm): Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 3800 vs Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw 5300
- Bevel capacity (°): Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 56 deg vs Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw 53 deg
- Brushless: Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw Yes vs Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw No
- Weight (lb): Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw 6.6 lb vs Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw 11.5 lb

## What reviewers say

**Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw** — Only one whitelisted source covers the exact P508: a 2017 pre-launch preview from Pro Tool Reviews, not a hands-on lab test, so no measured results exist. It praises the brushless motor and 26% larger 7-1/4-inch cut capacity as clear upgrades, but flags the doubled price and still-missing rafter hook. (1 sourced review.)

**Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw** — Only one whitelisted tester—Pro Tool Reviews—had accessible review prose for this exact model, naming the Skilsaw SPT77WML its best corded worm-drive circular saw for its 77-series 15-amp power and lightweight magnesium build. No other whitelisted source with accessible measurements was available, so no cross-source comparison exists. (1 sourced review.)

## Sources

- Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw: https://www.homedepot.com/p/RYOBI-ONE-18V-Brushless-Cordless-7-1-4-in-Circular-Saw-Tool-Only-P508/301848641 (homedepot.com, verified 2026-06-20)
- Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw: https://www.skil.com/wormdrive-saw-spt77wml-01/ (skil.com, verified 2026-06-20)

Canonical: https://frontdeskreview.com/gear/circular-saws/ryobi-p508-vs-skilsaw-spt77wml-01/
Cite: Per The Front Desk Review, Ryobi P508 ONE+ 18V Brushless 7-1/4 in. Cordless Circular Saw ($119) vs Skilsaw SPT77WML-01 15-Amp 7-1/4 in. Lightweight Magnesium Worm Drive Circular Saw ($219.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/circular-saws/ryobi-p508-vs-skilsaw-spt77wml-01/
License: CC BY 4.0.