FLEX 24V Cordless 1-Inch SDS-Plus Rotary Hammer FX1551A-Z

Flex Continues to Add Heavy Hitters to Their 24V Cordless Lineup

Shifting our coverage over to masonry, the Flex 24V Cordless 1-Inch SDS-Plus Rotary Hammer is making a variety of tasks more convenient with the addition of an interchangeable 1/2-inch keyless chuck standard in the box. More is possible with fewer tools in the bag, ultimately cutting out a few of those trips back to the toolbox.

FLEX 24V Cordless 1-Inch SDS-Plus Rotary Hammer Performance

Flex offers two cordless rotary hammers and this model is the more powerful of the two. If you’re looking for something a little lighter, check out their 7/8-inch rotary hammer here.

As for this model, you’re looking at a rotary hammer with a sensor-free brushless motor that delivers up to 980 RPM with 4350 BPM and 1.9 ft-lbs of impact energy (2.6 Joules). With that performance level, you can expect to drill up to 1 inch in concrete, 1/2 an inch in steel, and 1 3/16 inches in wood.

FLEX 24V Cordless 1-Inch SDS-Plus Rotary Hammer FX1551A-Z

FLEX 24V Cordless 1-Inch SDS-Plus Rotary Hammer Design Notes

3 + 1 Mode Selection

An adjustable knob on the side lets you quickly switch between the three drive settings: Rotary Drilling Mode, Hammer Drilling Mode, and Hammer Mode. In addition to the drive settings, there’s also a position to adjust your chisel angle located between Hammer Drilling Mode and Hammer Mode.

Mode Selection

Interchangeable Chuck

Another notable feature is the interchangeable chucks. Quickly and easily change from SDS-Plus to a keyless 1/2-inch full metal chuck to make the tool more versatile. This is a really handy addition because you can quickly switch between tool applications and materials. An electrician can drill a 1-inch hole in a cinder block wall, transition to the 1/2-inch keyless chuck, and rough-in through 2×4 studs on the interior all with one tool!

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