
DEWALT DWE6421
Score: 78/100
ZFE Air Sander
Score: 72/100Rankings

The DEWALT DWE6421K is a lightweight, corded 5-inch random orbit sander featuring a 3.0-amp motor and a fixed 12,000 OPM speed. It is designed for general-purpose woodworking and light material sanding, offering a low-profile build and vibration-reduction technology to enhance user comfort during extended use. It is best suited for DIYers and hobbyists doing occasional refinishing, deck prep, or furniture restoration.

The ZFE ARPS3SET is a compact pneumatic random orbital sander designed for precision work in tight spaces, featuring interchangeable backing plates. It operates at 15,000 RPM with an eccentric double-rotation method to ensure uniform polishing and low vibration. The kit includes an extensive array of accessories, making it a versatile option for auto body and woodworking tasks.
| Attribute | ![]() | ![]() |
|---|---|---|
12,000 RPM | 15,000 RPMbest | |
120 Vbest | — | |
2.38 mm | 3 mmbest | |
3 Abest | — | |
5 inbest | — | |
| ↓ lower better | 1.31 kg | 1.048 kgbest |
1.83 mbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Sanding Performance(2) | ||
Orbit Diameter (mm) | 2.38 mm | 3 mm |
Pad Diameter (in) | 5 in | 1/2, 2, 3 in |
Ergonomics & Features(1) | ||
Tool Weight (kg) | 1.31 kg | 1.048 kg |
Power & Performance(2) | ||
Power Source | Corded | Pneumatic |
No-Load Speed (RPM) | 12000 RPM | 15000 RPM |


Products in the top-left offer the best value (high score, low price).

Professional reviewers highlight the DWE6421 as a solid choice for a variety of sanding applications due to its balanced speed and accessible design. They praise the 2.9-pound weight and 5.5-inch height for accessibility in tight spaces and emphasize the counterweight vibration-reduction system as a meaningful comfort feature.
Everyday users appreciate the DWE6421K as an affordable entry-level sander that handles typical home workshop tasks effectively. Common praise focuses on the real reduction in hand vibration, the convenience of quick paper changes, and the lightweight nature of the tool for overhead work.

Professional reviewers and editors have not provided comprehensive assessments of the ZFE ARPS3SET. Available sources are limited to product descriptions and a single YouTube unboxing video that highlights the accessory kit and ease of use but lacks in-depth performance testing.
There is no available consumer sentiment data for this product. No user reviews, ratings, or forum discussions were found on major platforms like Amazon or Reddit.
“Perfect for DIY projects”

“Low vibration is real”

“Quick paper changes”


