
WORKPRO W182004A Straight Air Die Grinder 1/4 Inch
- Maximum Rotational Speed: 25000 rpm
- Power Source: Pneumatic
- Material Type: Aluminum
- Item Weight: 0.27 pounds
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A featherweight, 25,000 RPM air die grinder built for detail work wherever shop air is already on hand.
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ASIN: B08ZH9YBY5Model: W182004ACategory: Power Grinders
Overview
The WORKPRO W182004A is an air powered grinder that spins up to 25,000 RPM while weighing just 4.35 ounces. That combination of high speed and low mass is typical of a compact pneumatic die grinder rather than a full-size bench or angle grinder.
Air powered tools in this weight class are built for one-handed detail work, such as deburring or polishing in tight spaces, and they rely on a shop air compressor rather than a battery or cord. The listing does not state collet size or required air pressure, so pairing it with the right bits and compressor takes a separate check.
- 25,000 RPM rated speed
- Air powered, not battery or corded
- 4.35 ounce weight
- WORKPRO model W182004A
Who it's for
Fits users who already run a shop air compressor and want a light, high-speed tool for detail grinding or deburring. Not a fit for anyone without a compressed air supply, since there is no battery or cord option.
Pros and cons
- Very light at 4.35 ounces
- High 25,000 RPM speed rating
- Requires a separate air compressor
- Collet size and air pressure not listed
Performance notes
The 25,000 RPM rating is high even for pneumatic die grinders, which should suit fast material removal on small areas, though actual cutting speed depends on the pressure and volume the compressor supplies. At 4.35 ounces it should stay easy to hold steady for extended detail work, but collet size is not listed, so bit compatibility needs separate confirmation.
Specifications
| Brand | WORKPRO |
|---|---|
| Model | W182004A |
| Dimensions & fit | |
| Item Weight | 0.27 poundslower than 97% of 107 power grinders |
| Capacity & performance | |
| Maximum Rotational Speed | 25000 rpmhigher than 85% of 122 power grinders |
| Power & efficiency | |
| Power Source | Pneumatic |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Black, Red |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Style Name | Child,Safety |
Closest rivals on specs
Astro Pneumatic 1221 Die Grinder Kit with Carbide Burr Set- Item Weight 0.27 vs 0.1 pounds (+170%)
DEWALT DWMT70783 Straight Die Grinder- Item Weight 0.27 vs 0.5 pounds (-46%)
EMAX Straight Shaft Air Die Grinder 1/4 Inch- Item Weight 0.27 vs 0.81 pounds (-67%)
Frequently asked questions
Does the WORKPRO W182004A need a compressor?
Yes, it is air powered and runs off shop compressed air rather than a battery or cord.
How fast does it spin?
It is rated at 25,000 RPM.
How much does it weigh?
4.35 ounces.