Skilsaw SPT77WML-01 vs. Worx WX439L

Let’s take a look at these two circular saws: the Skilsaw SPT77WML-01 and the Worx WX439L.

Features & Benefits

You can read our roundup of the best compact circular saws and the best full-size circular saws.

Power & Motor

Both products are corded and run on 120 V. The SPT77WML-01 draws 15 amps. The WX439L draws 4.5 amps. Standard U.S. residential circuits are 120 V, 15 A, which will support either of the saws.

The SPT77WML-01 motor spins at 5300 rpm and the WX439L motor spins at 4100 rpm. Don’t get too caught up in these numbers, since the manufacturers measure them under ideal conditions, and they don’t have a direct impact on the saw’s real-world ability to handle different material.

The SPT77WML-01 has a worm-drive motor. The WX439L has a direct drive motor. Worm-drive motors are longer and heavier, but often more powerful and easier to control due to the weight being more centered.

Blades & Capacity

The SPT77WML-01 accepts 7 1/4” diameter blades and has a 5/8” arbor. The WX439L takes 4 1/2” diameter blades and has a 3/8” arbor. Most 8-to-10” blades have a 5/8” arbor hole, so this size of arbor gives you a lot of options.

The SPT77WML-01 can bevel the blade up to 53°, is able to cut up to 2 3/8” deep at a 90° angle, and will cut up to 1 15/16” at 45°. The WX439L can bevel its blade up to 45°, can cut up to 1 11/16” deep at an angle of 90°, and is able to cut up to 1 1/8” at a 45° angle.

When beveling the saw, most circular saws will have positive stops at common angles such as 45° and 90°. This ensures you are making precise cuts. Some saws have additional stops at other angles.

The Skilsaw has stops at 45°.

Both circular saws have the blade on the left side of the saw. Right-handers sometimes find it easier to see and control blades mounted to the left, while left-handers might find the same true for right-mounted blades.

Pros & Cons

Let’s take a look at some of the pluses and minuses of these products.

For the Skilsaw:

For the Worx:

Comparison Chart

Here’s a full side-by-side comparison of these products’ specs. You can view comparisons of the Skilsaw SPT77WML-01 with other products

	Skilsaw SPT77WML-01	Worx WX439L
Brand	Skilsaw	Worx
Power Type	corded	corded
Power - Voltage	120 V	120 V
Power - Amps	15 A	4.5 A
No-load RPM	5300 rpm	4100 rpm
Blade Diameter	7 1/4”	4 1/2”
Maximum Bevel	53°	45°
Depth of Cut (at 90°)	2 3/8”	1 11/16”
Depth of Cut (at 45°)	1 15/16”	1 1/8”
Arbor Size	5/8”	3/8”
Dimensions	19 1/2” L × 7” H
Weight	11.5 lbs	3.97 lbs
Blade - Side	left	left
Drive Mechanism	worm-drive	direct drive
Stops	45°
Warranty	1 year
Pros	Lots of torque for cutting difficult material Good build quality Blade-left design provides good visibility Easy to track straight cut lines	Slimmer handle than its predecessor is easier to grip Includes rip fence Dust port for connecting to a shop vacuum
Cons	Heavier than most direct-drive saws	Rip fence is tricky to keep accurate when tightening Struggles to cut through full 2x products
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