Metabo HPT Compact SL Mid Torque Impact Wrench Review: A Light, Fast 18V Half-Inch Driver

Introduction

Metabo HPT has a compact SL mid torque 1/2-inch impact wrench in its 18V line, and it is a genuinely interesting size proposition. It runs on 18V batteries, but it will also accept the multivolt 36V packs if you want extra runtime. It weighs just 2.9 lb, carries an IP56 rating for dust and water resistance, and offers a nut busting torque figure that puts it in striking range of larger mid-torque tools.

What makes this one worth a closer look, though, is not just the numbers. It has a feel that sits somewhere between an impact driver and a traditional impact wrench, and that distinction matters more than you might expect when you are working with lug nuts all day.

Who This Product Is For

If you are already in the Metabo HPT battery platform and you want a small, lightweight impact wrench for smaller jobs, this is a very good fit. The 2.9 lb weight and compact body make it easy to hold for long stretches, whether that is all-day shop work, overhead tasks, or rotating tires on a truck. It is small and affordable, available as a bare tool or as a kit, and it is comfortable to use.

Vibration management is part of that comfort story too. The top of the tool can move independently, so vibrations stay up top and do not transfer down the handle to your hand or into the battery. A tether point on the back and a belt clip on the side round out the practical details.

Main Strengths

The headline spec is the 443 ft-lbs nut busting torque figure listed on the box and website. That is enough to remove any decent lug nut and handle a wide range of fastening work, with the usual caveat that real-world results depend on bolt size, rust, and the fact that these ratings come from lab conditions rather than the wild.

Interestingly, the website lists max tightening torque as 225 ft-lbs while the box shows 255 ft-lbs, which looks like a typo on the website side. Either way, the tool comfortably covers light automotive and mechanical work.

Speed numbers are also aggressive: 2,800 RPM and 4,000 impacts per minute. For context, the Milwaukee M18 compact sits at 250 ft-lbs nut busting, 2,400 RPM, and 3,500 IPM, while the Milwaukee M18 mid torque offers 650 ft-lbs, 2,575 RPM, and 3,100 IPM. This Metabo HPT slots right in between those two on both power and size.

In practice, rotating truck tires worked well, and the tool gave more of an impact driver feel than the big high-torque wrenches do. Size-wise, it is noticeably smaller than the standard Metabo HPT half-inch impact wrench, though some of the height comes from the battery pack.

The Unique Feel: 4,000 IPM Explained

Here is the part that takes some getting used to. The 4,000 IPM figure is much closer to what you would see on an impact driver than on a large high-torque impact wrench. Big high-torque tools hit harder and slower because they are pushing torque into the fastener with each blow. This one uses smaller, faster impacts instead.

The result is a feel that is neither better nor worse, just different. When working with lug nuts, it was harder to judge how tight a fastener was based on how long it was impacting, because the smaller, faster hits did not communicate that the same way. It did not take long to adapt, and it still does the same job, but it is worth knowing before you pick it up. If you have been coming down from high-torque wrenches, expect a noticeably different sensation in the hand.

Auto Stop Mode and Four Speed Levels

The bottom of the tool offers four levels of tightening, effectively adjusting both RPM and IPM. Level two proved perfect for installing lug nuts, taking them up to roughly 100 ft-lbs on a truck.

There is also an auto mode that behaves differently depending on the level selected. In auto stop mode at level two, the tool tightens just a bit more than hand tight. Switching to removal, it winds up, stops, and then eases the nut off so it does not go flying across the shop, which is a genuinely nice touch. At level four, tightening is much more aggressive, while loosening behaves similarly, just slightly faster. Being able to tighten further in auto stop mode at higher levels is a thoughtful bit of design.

Things to Consider Before Buying

The main trade-off is that higher-IPM feel. It is not a flaw, but if you are used to judging fastener tightness by the rhythm of a slower-hitting wrench, expect a short adjustment period.

The LED light sits on the bottom of the tool and did not provide a complete view of the work area. A full wraparound light at the front would have been nicer, though it still worked fine in practice.

It is also worth sizing it up honestly against the competition. Milwaukee’s compact is smaller and less powerful; Milwaukee’s 3/8-drive mid torque is larger and more powerful but needs at least a 5Ah battery to deliver it. This Metabo HPT sits right in between on both size and power, which is exactly the niche it is aiming for.

Buying Advice

Buy this if you are in the Metabo HPT line and want a lightweight, compact impact wrench for lug nuts, general mechanical work, and overhead or all-day tasks where comfort matters. Its IP56 rating, vibration isolation, auto stop mode, and 443 ft-lbs nut busting torque make it a strong option in this size class. If you regularly need more raw torque than a compact can deliver, a larger mid torque tool remains the better choice, but for this tool’s intended jobs it works great.

Conclusion

The Metabo HPT compact SL mid torque 1/2-inch impact wrench is a nice, small, affordable tool that is comfortable to use and thoughtfully designed. Its high-IPM character takes a moment to get used to, and the bottom-mounted LED is a minor compromise, but neither should hold you back. For Metabo HPT users looking for a compact wrench that handles smaller jobs well, it is a great option to consider.