The Milwaukee 2646-20 M18 2-Spd Grease Gun Bare Tool is a cordless grease gun engineered for heavy-duty lubrication tasks in automotive, industrial, and agricultural settings. It operates on Milwaukee’s M18 battery platform, offering the convenience of cord-free mobility without sacrificing power. The unit features a two-speed control system that allows the user to switch between high-volume output for rapid filling and high-pressure delivery for stubborn fittings. Built with a durable polymer housing and a metal gear case, the tool is designed to withstand harsh job site conditions, including drops, dust, and moisture. The integrated LED light illuminates dim work areas, enhancing visibility during operation. At its core, the grease gun utilizes a brushless motor, which contributes to increased runtime, longer component life, and more consistent performance compared to brushed alternatives. The two-speed transmission delivers 0–1.2 ounces per minute on high speed and 0–6.0 ounces per minute on low speed, with a maximum pressure of 10, 000 psi. This versatility makes it suitable for a wide range of grease types, from standard NLGI #2 to heavy-duty greases used in construction equipment. The bare tool comes without a battery or charger, allowing users to leverage existing M18 batteries from other tools in the Milwaukee ecosystem. The ergonomic design includes a comfortable over-molded grip and a balanced weight distribution, reducing user fatigue during extended use. The cartridge loading mechanism is straightforward, accommodating standard 14-ounce grease cartridges or bulk grease via a fill pump. A built-in bleeder valve simplifies air removal, ensuring consistent grease flow and preventing downtime. The reinforced plunger rod and hardened steel gears enhance longevity, even under continuous heavy loads. The tool also features a durable hose with a spring guard and a rigid extension, providing precise placement in tight spaces. Quality control is evident in the tight tolerances of the drivetrain and the high-quality seals that prevent grease leakage. The unit’s compatibility with Milwaukee’s REDLITHIUM battery technology ensures consistent power delivery until the battery is depleted, with no drop in performance. The two-speed selector is robust and easy to operate even with gloves.

The Milwaukee 2646-20 is a well-engineered, reliable choice for professionals who need a wireless grease gun with superior build quality and consistent output.