The DEWALT DCGG581B 20V MAX 2-Speed Grease Gun is a cordless grease gun built for equipment maintenance, fleet service, and shop work where hand pumping is slow and clogged fittings are common. This is a grease gun designed for high-flow lubrication and hard-to-reach grease fittings. Model Number: DCGG581B. If you already run on the DEWALT 20V MAX platform and want a faster way to service machinery, trailers, heavy equipment, or agricultural gear, this is the tool that makes that job a lot less miserable.

The headline spec here is up to 10,000 max PSI. That matters because grease work is rarely clean or easy in the real world. Old fittings, dried grease, and awkward service points can stop a weaker tool cold. The pressure on this cordless grease gun gives you the force needed to push through stubborn fittings, while the output of up to 9 ounces per minute helps move through routine service intervals faster when you have multiple zerks to hit.

DEWALT also gave this model 2-speed operation and a variable speed trigger, which is more useful than it sounds on paper. Fast output is great when you are doing repetitive maintenance on larger machines. Controlled output matters when you need to avoid overfilling, keep grease where it belongs, and work around seals or cleaner service points. Instead of a one-speed blast, you get better control over both pace and precision.

The 47 inch reinforced flexible hose is a big part of why this tool works well on actual equipment. You are not always greasing a fitting that is out in the open. Many are tucked behind guards, under decks, or around suspension and driveline components. A longer reinforced hose gives you room to position the tool where it is comfortable while still reaching the fitting. That reduces fighting the tool and helps you work around machinery instead of against it.

For day-to-day jobsite practicality, DEWALT includes an onboard LED to help light up darker service areas and line up the nozzle. Anyone who has worked under a trailer, beside a piece of construction equipment, or around shop bays knows that grease points are often exactly where the light is worst. It is a simple feature, but it saves time and makes hookup less frustrating.

Runtime is another strong point. DEWALT states this grease gun can dispense up to 7 tubes per charge under stated test conditions using NLGI #2 grease and a DCB203 battery, sold separately. Since this is a bare tool, it is best for users who already own compatible DEWALT 20V MAX batteries and chargers. That makes it a smart add-on for mechanics, heavy equipment operators, maintenance techs, farm users, and contractors who are already invested in the platform and want to skip manual grease guns for good.

Who should buy it? If you service equipment regularly and want a cordless grease gun that combines serious pressure, decent output speed, and better reach than a basic manual setup, this one makes sense. It is especially well suited for automotive service, fleet maintenance, agriculture, construction equipment upkeep, and shop environments where grease work is frequent enough that saving a few minutes per machine adds up fast.

DEWALT DCGG581B 20V MAX 2-Speed Grease Gun Means Less Pumping, More Servicing

The DEWALT DCGG581B 20V MAX 2-Speed Grease Gun is the kind of tool that pays for itself in saved time if you grease equipment regularly.

• Who it's for: Mechanics, maintenance crews, farm users, and contractors servicing trailers, heavy equipment, and shop machinery.
• Why it stands out: The combo of 10,000 PSI, two-speed control, strong output, and a long reinforced hose gives you both power and usability.
• Worth knowing: This is a bare tool, so it makes the most sense if you already own DEWALT 20V MAX batteries and charger.

• Is this a cordless or corded grease gun? It is a cordless grease gun.
• What battery platform does it use? It uses the DEWALT 20V MAX platform.
• Does it include a battery or charger? No. This is a tool-only or bare-tool version.
• How much pressure can it produce? DEWALT rates it at up to 10,000 max PSI.
• Does it have a light for low-visibility service points? Yes. It has an onboard LED to help align the nozzle.