I have 2 vehicles and 2 trailers, and I routinely rotate my own tires. Got tired of busting my knuckles using a breaker bar. I own several other Greenworks tools, so I already have several 24V batteries and chargers. Saw this Impact Wrench go on sale and snapped one up. What I thought made this such a good deal, was that it comes with a 4Ah battery, which costs (depending on where you buy it), between $55-60. I paid $89 for the tool, plus the battery, charger, case and small assortment of sockets... I can always use an extra high capacity battery, so it was like getting the wrench for $35-40. That's a deal in my book. So far I've used it to rotate one set of tires, and remove a few large bolts under my vehicle to install a skid plate. The wrench worked well in both those use cases. The torque setting is controlled electronically. There are 3 settings, and I "think" they simply control the power going to the motor. So think Low, Medium, and High power going to the motor correlates to Low, Medium, and High torque. Pretty simple and fewer mechanical parts to break. I had no issues removing all the lug nuts using the high setting. When reinstalling the lug nuts, I wanted to hand torque, so I used the Low setting, and did not let the wrench hammer away. The nuts were still "loose" enough that I could get a little turn on the manual torque wrench before I got the "click" that the torque was correctly set. Underneath the car, I used the wrench to remove some sub-frame bolts so I could attach a skid plate. I used the high setting and it took about 5~8 seconds for the wrench to begin working those bolts out. I think they were installed with some type of factory "loc-tite" because there was a green film on the bolt threads. Those bolts were definitely installed to NOT come out easily, but the wrench definitely made the job easier. Trying to remove them from underneath, using a long breaker bar would have been a real struggle. The front of the tool where the gears and socket attach are all metal. The motor housing and handle are sturdy plastic. The handle grip has some type of a slip resistant black coating. A belt clip attachment was in the box and can be screwed into either side of the handle, down where the battery attaches. Overall, the wrench has a solid feel. It is not "light", but I wouldn't expect that from a well made tool. After using the tool, the battery still showed 3 out of 3 bars, so I imagine you'll get a lot of use with the supplied battery. The 4 sockets that come with it are all Imperial/US sizes (NOT metric), and are the typical sizes you would see on car lug nuts. The bag is a nice touch, but if you attach the belt clip to the wrench, it adds maybe 1.5" to the length, and makes it a tight squeeze to get the storage bag to zip closed. It does fit, just a little tight. You CANNOT make the wrench fit in the bag if you leave the battery attached (but you probably shouldn't do that anyway). However, the wrench, battery, charger, and sockets will all fit in the bag if placed in separately. In summary, this is a handy tool to have around if you routinely change tires, and/or work on any equipment that has lots of nuts/bolts. For the price (value), functionality, construction, and the 3 year warranty (tool & battery), it's hard to beat... especially if you've already invested into the Greenworks 24V tool family. UPDATE. I've now used the impact wrench on several bigger automotive projects and I've had a chance to remove bolts that I had previously installed using a calibrated torque wrench. There is no way this tool produces 300 ft-lbs of torque. On one vehicle, I tried to remove lugnuts that had been torqued to 110 ft-lb. The wrench didn't budge any of them. While the tool is good for light duty work, it is not suitable for an automotive mechanic.
