The Milwaukee M18 FUEL 2734-21HD represents the pinnacle of high-performance compact drilling and driving technology. This brushless hammer drill driver is engineered for professionals who demand reliability and power, even in the most challenging job site conditions.
Engineered for Professional Toughness
At the heart of the M18 FUEL 2734-21HD is the POWERSTATE™ Brushless Motor, which delivers exceptional speed and torque while extending tool life and runtime. The system generates a substantial 1,800 in-lbs of torque and a no-load speed of 0-2,000 RPM, allowing users to drill a 1/2" hole in wood in just two seconds. This performance is not just about raw numbers; it is about consistently applying that power to drive fasteners flush or bore through dense materials without bogging down.
REDLITHIUM™ Battery Technology
Powering this brute force is the M18 REDLITHIUM™ XC 5.0Ah battery, a component specifically designed to work in harmony with the FUEL tools. This battery chemistry provides the necessary current for the motor to achieve its maximum output without voltage sag. Users experience faster drilling, more consistent driving, and significantly longer runtimes compared to previous lithium-ion or NiCad batteries. The intelligent design also allows for tool heating to be actively managed, ensuring optimal performance in cold weather environments.

Advanced Features for Precision and Control
The 2734-21HD incorporates Milwaukee’s legendary ACT-ON™ Technology, which brings a level of speed and accuracy to hammer drills that was previously unattainable. This system allows for rapid mode switching; the user can transition from hammer drill mode to rotation-only mode with a simple twist of the collar, without breaking their grip. This is invaluable when moving from drilling holes to driving screws into freshly drilled pilot holes.
Ergonomics and Build Quality
nProfessional use demands a tool that can be wielded comfortably for hours, and the 2734-21HD delivers on this front with its rubber overgrip and balanced weight distribution. The ergonomic handle reduces user fatigue, while the magnesium gear case ensures the tool remains lightweight yet robust enough to withstand repeated drops. The built-in LED work light, combined with a 360-degree rotatable spindle lock, ensures visibility and accessibility in tight or awkward corners.
| Specification | Detail |
|---|---|
| Motor Type | Brushless POWERSTATE™ |
| No-Load Speed | 0-2,000 RPM |
| Torque | 1,800 in-lbs |
| Battery | M18 REDLITHIUM™ 5.0Ah |
| Technology | ACT-ON™, REDLINK PLUS™ Intelligence |
Intelligence and Safety
Modern contractors understand the value of data, and this tool is designed to provide it. The REDLINK PLUS™ Intelligence system communicates with the battery and motor to prevent damage from overloads, ensuring the optimal balance of power and heat management. If the tool senses an excessive load or environmental stress, it will automatically adjust the power to protect the mechanism. Furthermore, the electronic clutch protects the user’s wrists by disengaging when the bit binds, preventing sudden tool kickback.

Application Versatility
While the designation "2734" indicates this is a hammer drill, the 2734-21HD is a true multi-tool. With the correct settings adjusted via the side collar, it functions as a high-speed driver for repetitive fastener installation. This dual capability makes it a go-to instrument for framing, electrical work, and plumbing. Professionals can rely on this single tool to handle the majority of their fastening and drilling needs on both residential and commercial projects.





















